Harlequin Intrigue Series, Books by Author’s Last Name – M
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| # | Author | Book Title | Year |
| # 794 | Manning, Jackie | Sudden Alliance | 2004 |
| # 708 | Manning, Jackie | Tough As Nails | 2003 |
| # 2 | Mardon, Deirdre | In for a Penny | 1984 |
| # 15 | Mardon, Deirdre | Reluctant Lover | 1985 |
| # 20 | Mardon, Deirdre | With Penalty and Interest | 1985 |
| # 54 | Marshall, Jacqueline | Drastic Measures | 1986 |
| # 2138 | Marshman, Leslie | Resolute Aim | 2023 |
| # 2222 | Marshman, Leslie | Resolute Bodyguard | 2024 |
| # 2174 | Marshman, Leslie | Resolute Investigation | 2023 |
| # 2054 | Marshman, Leslie | Resolute Justice | 2022 |
| # 2330 | Marshman, Leslie | Resolute Security | 2025 |
| # 2086 | Marshman, Leslie | Scent Detection | 2022 |
| # 2366 | Marshman, Leslie | The Texan’s Bodyguard | 2026 |
| # 1055 | Marton, Dana | 72 Hours | 2008 |
| # 933 | Marton, Dana | Bridal Op | 2006 |
| # 875 | Marton, Dana | Camouflage Heart | 2005 |
| # 1121 | Marton, Dana | Desert Ice Daddy | 2009 |
| # 1013 | Marton, Dana | Intimate Details | 2007 |
| # 991 | Marton, Dana | Ironclad Cover | 2007 |
| # 1328 | Marton, Dana | Last Spy Standing | 2012 |
| # 1448 | Marton, Dana | Most Eligible Spy | 2013 |
| # 1007 | Marton, Dana | My Bodyguard | 2007 |
| # 1453 | Marton, Dana | My Spy | 2013 |
| # 917 | Marton, Dana | Protective Measures | 2006 |
| # 902 | Marton, Dana | Rogue Soldier | 2006 |
| # 1212 | Marton, Dana | Royal Captive | 2010 |
| # 1142 | Marton, Dana | Royal Protocol | 2009 |
| # 1136 | Marton, Dana | Saved By The Monarch | 2009 |
| # 985 | Marton, Dana | Secret Contract | 2007 |
| # 821 | Marton, Dana | Secret Soldier | 2005 |
| # 806 | Marton, Dana | Shadow Soldier | 2004 |
| # 1085 | Marton, Dana | Sheik Protector | 2008 |
| # 1039 | Marton, Dana | Sheik Seduction | 2008 |
| # 1358 | Marton, Dana | Spy Hard | 2012 |
| # 1459 | Marton, Dana | Spy in the Saddle | 2013 |
| # 1206 | Marton, Dana | Stranded With the Prince | 2010 |
| # 1105 | Marton, Dana | Tall, Dark And Lethal | 2008 |
| # 1299 | Marton, Dana | The Black Sheep Sheik | 2011 |
| # 859 | Marton, Dana | The Sheik’s Safety | 2005 |
| # 1179 | Marton, Dana | The Socialite and the Bodyguard | 2010 |
| # 1235 | Marton, Dana | The Spy Who Saved Christmas | 2010 |
| # 1364 | Marton, Dana | The Spy Wore Spurs | 2012 |
| # 1391 | Marton, Dana | Three Cowboys: Morgan | 2012 |
| # 962 | Marton, Dana | Undercover Sheik | 2006 |
| # 1339 | Matthews, Alana | A Wanted Man | 2012 |
| # 1239 | Matthews, Alana | Body Armor | 2010 |
| # 1399 | Matthews, Alana | Internal Affairs | 2013 |
| # 1208 | Matthews, Alana | Man Undercover | 2010 |
| # 1271 | Matthews, Alana | Waterford Point | 2011 |
| # 139 | Mayer, Suzanne | In for Life | 1990 |
| # 519 | McBride, Jule | The Strong, Silent Type | 1999 |
| # 418 | McBride, Jule | Wed to a Stranger? | 1997 |
| # 207 | McCann, Heather | The Master Detective | 1992 |
| # 236 | McCann, Heather | Whispers in the Dark | 1993 |
| # 168 | McDaniel, Laraine | Against All Hope | 1991 |
| # 272 | McDaniel, Laraine | Within the Law | 1994 |
| # 2217 | McKenna, Lindsay | No Turning Back | 2024 |
| # 2297 | Mettner, Katie | Dark Web Investigation | 2025 |
| # 2335 | Mettner, Katie | Deadly Security Breach | 2026 |
| # 2132 | Mettner, Katie | Going Rogue in Red Rye County | 2023 |
| # 2264 | Mettner, Katie | Holiday Under Wraps | 2025 |
| # 2258 | Mettner, Katie | The Masquerading Twin | 2024 |
| # 2203 | Mettner, Katie | The Perfect Witness | 2024 |
| # 2209 | Mettner, Katie | The Red River Slayer | 2024 |
| # 2250 | Mettner, Katie | The Silent Setup | 2024 |
| # 2318 | Mettner, Katie | Tracing Her Stolen Identity | 2025 |
| # 96 | Michaels, Jan | Into the Night | 1988 |
| # 32 | Michaels, Jan | Pursuit in the Wilderness | 1985 |
| # 89 | Michaels, Jan | Red Dog Run | 1988 |
| # 71 | Michaels, Jan | The Only Witness | 1987 |
| # 402 | Miles, Cassie | A New Year’s Conviction | 1997 |
| # 443 | Miles, Cassie | A Real Angel | 1997 |
| # 269 | Miles, Cassie | Are You Lonesome Tonight? | 1994 |
| # 1317 | Miles, Cassie | Baby Battalion | 2011 |
| # 1171 | Miles, Cassie | Bodyguard Under the Mistletoe | 2009 |
| # 2360 | Miles, Cassie | Broken Vows | 2026 |
| # 1025 | Miles, Cassie | Christmas Cover-Up | 2007 |
| # 1102 | Miles, Cassie | Christmas Crime In Colorado | 2008 |
| # 1982 | Miles, Cassie | Cold Case Colorado | 2021 |
| # 1165 | Miles, Cassie | Colorado Abduction | 2009 |
| # 1621 | Miles, Cassie | Colorado Wildfire | 2016 |
| # 984 | Miles, Cassie | Compromised Security | 2007 |
| # 1126 | Miles, Cassie | Criminally Handsome | 2009 |
| # 285 | Miles, Cassie | Don’t Be Cruel | 1994 |
| # 2102 | Miles, Cassie | Escape from Ice Mountain | 2022 |
| # 521 | Miles, Cassie | Father, Lover, Bodyguard | 1999 |
| # 2035 | Miles, Cassie | Find Me | 2021 |
| # 948 | Miles, Cassie | Footprints In the Snow | 2006 |
| # 449 | Miles, Cassie | Forget Me Not | 1998 |
| # 1736 | Miles, Cassie | Frozen Memories | 2017 |
| # 2270 | Miles, Cassie | Fugitive Harbor | 2025 |
| # 2066 | Miles, Cassie | Gaslighted in Colorado | 2022 |
| # 391 | Miles, Cassie | Guarded Moments | 1996 |
| # 150 | Miles, Cassie | Handle With Care | 1990 |
| # 237 | Miles, Cassie | Heartbreak Hotel | 1993 |
| # 122 | Miles, Cassie | Hide and Seek | 1989 |
| # 1229 | Miles, Cassie | Hook, Line and Shotgun Bride | 2010 |
| # 1402 | Miles, Cassie | Hostage Midwife | 2013 |
| # 1074 | Miles, Cassie | In The Manor With The Millionaire | 2008 |
| # 1193 | Miles, Cassie | Indestructible | 2010 |
| # 2162 | Miles, Cassie | K-9 Hunter | 2023 |
| # 2216 | Miles, Cassie | K-9 Missing Person | 2024 |
| # 1223 | Miles, Cassie | Lock, Stock and Secret Baby | 2010 |
| # 1343 | Miles, Cassie | Midwife Cover | 2012 |
| # 1368 | Miles, Cassie | Mommy Midwife | 2012 |
| # 1384 | Miles, Cassie | Montana Midwife | 2012 |
| # 1706 | Miles, Cassie | Mountain Blizzard | 2017 |
| # 1651 | Miles, Cassie | Mountain Bodyguard | 2016 |
| # 1454 | Miles, Cassie | Mountain Heiress | 2013 |
| # 1255 | Miles, Cassie | Mountain Midwife | 2011 |
| # 1540 | Miles, Cassie | Mountain Retreat | 2015 |
| # 1682 | Miles, Cassie | Mountain Shelter | 2016 |
| # 910 | Miles, Cassie | Murder on the Mountain | 2006 |
| # 1048 | Miles, Cassie | Mysterious Millionaire | 2008 |
| # 320 | Miles, Cassie | Mysterious Vows | 1995 |
| # 999 | Miles, Cassie | Navajo Echoes | 2007 |
| # 670 | Miles, Cassie | Not on His Watch | 2002 |
| # 787 | Miles, Cassie | Protecting the Innocent | 2004 |
| # 978 | Miles, Cassie | Protective Confinement | 2007 |
| # 769 | Miles, Cassie | Restless Spirit | 2004 |
| # 832 | Miles, Cassie | Rocky Mountain Maneuvers | 2005 |
| # 826 | Miles, Cassie | Rocky Mountain Manhunt | 2005 |
| # 820 | Miles, Cassie | Rocky Mountain Mystery | 2005 |
| # 381 | Miles, Cassie | Rule Breaker | 1996 |
| # 1177 | Miles, Cassie | Secluded with the Cowboy | 2009 |
| # 2126 | Miles, Cassie | Shallow Grave | 2023 |
| # 2324 | Miles, Cassie | Signal in the Storm | 2025 |
| # 1519 | Miles, Cassie | Snow Blind | 2014 |
| # 1481 | Miles, Cassie | Snowed in | 2014 |
| # 1293 | Miles, Cassie | Sovereign Sheriff | 2011 |
| # 645 | Miles, Cassie | State of Emergency | 2002 |
| # 1910 | Miles, Cassie | The Final Secret | 2020 |
| # 1844 | Miles, Cassie | The Girl Who Couldn’t Forget | 2019 |
| # 1816 | Miles, Cassie | The Girl Who Wouldn’t Stay Dead | 2018 |
| # 363 | Miles, Cassie | The Impostor | 1996 |
| # 2288 | Miles, Cassie | The Lightkeeper’s Curse | 2025 |
| # 529 | Miles, Cassie | The Safe Hostage | 1999 |
| # 694 | Miles, Cassie | The Secret She Keeps | 2003 |
| # 332 | Miles, Cassie | The Suspect Groom | 1995 |
| # 904 | Miles, Cassie | Undercover Colorado | 2006 |
| # 584 | Miles, Cassie | Undercover Protector | 2000 |
| # 1279 | Miles, Cassie | Unforgettable | 2011 |
| # 874 | Miles, Cassie | Warrior Spirit | 2005 |
| # 649 | Miles, Cassie | Wedding Captives | 2002 |
| # 1940 | Miles, Cassie | Witness on the Run | 2020 |
| # 2015 | Miller, Julie | A Stranger on Her Doorstep | 2021 |
| # 1642 | Miller, Julie | APB: Baby (Criminal Evidence) | 2016 |
| # 1073 | Miller, Julie | Armed And Devastating | 2008 |
| # 1427 | Miller, Julie | Assumed Identity | 2013 |
| # 947 | Miller, Julie | Baby Jane Doe (The Unknown Baby) | 2006 |
| # 966 | Miller, Julie | Beast In The Tower | 2007 |
| # 1176 | Miller, Julie | Beauty and the Badge | 2009 |
| # 1969 | Miller, Julie | Crime Scene Cover-Up | 2020 |
| # 2303 | Miller, Julie | Crime Scene K-9 | 2025 |
| # 1530 | Miller, Julie | Crossfire Christmas | 2014 |
| # 1975 | Miller, Julie | Dead Man District | 2021 |
| # 2111 | Miller, Julie | Decoding the Truth | 2022 |
| # 1836 | Miller, Julie | Do-or-Die Bridesmaid | 2019 |
| # 880 | Miller, Julie | Forbidden Captor | 2005 |
| # 651 | Miller, Julie | In the Blink of an Eye | 2002 |
| # 2350 | Miller, Julie | Justice Unleashed | 2026 |
| # 2245 | Miller, Julie | K-9 Defender | 2024 |
| # 2034 | Miller, Julie | K-9 Patrol | 2021 |
| # 1945 | Miller, Julie | K-9 Protector | 2020 |
| # 1099 | Miller, Julie | Kansas City Christmas | 2008 |
| # 1606 | Miller, Julie | Kansas City Confessions | 2015 |
| # 1768 | Miller, Julie | Kansas City Cop | 2018 |
| # 1679 | Miller, Julie | Kansas City Countdown | 2016 |
| # 1559 | Miller, Julie | Kansas City Cover-Up | 2015 |
| # 1367 | Miller, Julie | Kansas City Cowboy | 2012 |
| # 1582 | Miller, Julie | Kansas City Secrets | 2015 |
| # 719 | Miller, Julie | Kansas City’s Bravest | 2003 |
| # 1509 | Miller, Julie | KCPD Protector | 2014 |
| # 779 | Miller, Julie | Last Man Standing | 2004 |
| # 1245 | Miller, Julie | Man With the Muscle | 2010 |
| # 1751 | Miller, Julie | Military Grade Mistletoe | 2017 |
| # 1321 | Miller, Julie | Nanny 911 | 2011 |
| # 1709 | Miller, Julie | Necessary Action | 2017 |
| # 1015 | Miller, Julie | Nine-Month Protector | 2007 |
| # 588 | Miller, Julie | One Good Man | 2000 |
| # 819 | Miller, Julie | Partner Protector | 2005 |
| # 1873 | Miller, Julie | Personal Protection | 2019 |
| # 841 | Miller, Julie | Police Business | 2005 |
| # 1090 | Miller, Julie | Private S.W.A.T. Takeover | 2008 |
| # 1266 | Miller, Julie | Protecting Plain Jane | 2011 |
| # 2273 | Miller, Julie | Protecting the Pack | 2025 |
| # 1296 | Miller, Julie | Protecting the Pregnant Witness | 2011 |
| # 1727 | Miller, Julie | Protection Detail | 2017 |
| # 1070 | Miller, Julie | Protective Instincts | 2008 |
| # 1138 | Miller, Julie | Pulling the Trigger | 2009 |
| # 1812 | Miller, Julie | Rescued by the Marine | 2018 |
| # 898 | Miller, Julie | Search and Seizure | 2006 |
| # 642 | Miller, Julie | Secret Agent Heiress | 2001 |
| # 2215 | Miller, Julie | Shadow Survivors | 2024 |
| # 2192 | Miller, Julie | Sharp Evidence | 2024 |
| # 2268 | Miller, Julie | Special Forces K-9 | 2025 |
| # 619 | Miller, Julie | Sudden Engagement | 2001 |
| # 1408 | Miller, Julie | Tactical Advantage | 2013 |
| # 1201 | Miller, Julie | Takedown | 2010 |
| # 1922 | Miller, Julie | Target on Her Back | 2020 |
| # 1444 | Miller, Julie | Task Force Bride | 2013 |
| # 666 | Miller, Julie | The Duke’s Covert Mission | 2002 |
| # 2154 | Miller, Julie | The Evidence Next Door | 2023 |
| # 1350 | Miller, Julie | The Marine Next Door | 2012 |
| # 699 | Miller, Julie | The Rookie | 2003 |
| # 1391 | Miller, Julie | Three Cowboys: Virgil | 2012 |
| # 748 | Miller, Julie | Unsanctioned Memories | 2004 |
| # 1009 | Miller, Julie | Up Against The Wall | 2007 |
| # 1462 | Miller, Julie | Yuletide Protector | 2013 |
| # 986 | Montoya, Tracy | Finding His Child | 2007 |
| # 877 | Montoya, Tracy | House of Secrets | 2005 |
| # 1057 | Montoya, Tracy | I’ll Be Watching You | 2008 |
| # 750 | Montoya, Tracy | Maximum Security | 2004 |
| # 883 | Montoya, Tracy | Next of Kin | 2005 |
| # 889 | Montoya, Tracy | Shadow Guardian | 2005 |
| # 1032 | Montoya, Tracy | Telling Secrets | 2007 |
| # 1262 | Morgan, Angi | .38 Caliber Cover-up | 2011 |
| # 1619 | Morgan, Angi | Bulletproof Badge | 2016 |
| # 1916 | Morgan, Angi | Criminal Alliance | 2020 |
| # 1406 | Morgan, Angi | Dangerous Memories | 2013 |
| # 1648 | Morgan, Angi | Gunslinger | 2016 |
| # 1654 | Morgan, Angi | Hard Core Law | 2016 |
| # 1232 | Morgan, Angi | Hill Country Holdup | 2010 |
| # 1495 | Morgan, Angi | Navy Seal Surrender | 2014 |
| # 1423 | Morgan, Angi | Protecting Their Child | 2013 |
| # 1764 | Morgan, Angi | Ranger Defender | 2018 |
| # 1795 | Morgan, Angi | Ranger Guardian | 2018 |
| # 1758 | Morgan, Angi | Ranger Protector | 2018 |
| # 1626 | Morgan, Angi | Shotgun Justice | 2016 |
| # 1548 | Morgan, Angi | The Cattleman | 2015 |
| # 1471 | Morgan, Angi | The Marine’s Last Defense | 2014 |
| # 1555 | Morgan, Angi | The Ranger | 2015 |
| # 1499 | Morgan, Angi | The Renegade Rancher | 2014 |
| # 1541 | Morgan, Angi | The Sheriff | 2015 |
| # 125 | Morris, Elizabeth | A Teaspoon of Murder | 1989 |
| # 208 | Morris, Elizabeth | The First Horseman | 1992 |
| # 6 | Munn, Vella | Touch a Wild Heart | 1984 |
| # 2080 | Myers, Cindi | Alpha Tracker | 2022 |
| # 1799 | Myers, Cindi | Avalanche of Trouble | 2018 |
| # 1590 | Myers, Cindi | Black Canyon Conspiracy | 2015 |
| # 2110 | Myers, Cindi | Canyon Kidnapping | 2022 |
| # 2290 | Myers, Cindi | Canyon Killer | 2025 |
| # 1676 | Myers, Cindi | Christmas Kidnapping | 2016 |
| # 2123 | Myers, Cindi | Close Call in Colorado | 2023 |
| # 1884 | Myers, Cindi | Cold Conspiracy | 2019 |
| # 1586 | Myers, Cindi | Colorado Bodyguard | 2015 |
| # 1645 | Myers, Cindi | Colorado Crime Scene | 2016 |
| # 2242 | Myers, Cindi | Colorado Kidnapping | 2024 |
| # 2050 | Myers, Cindi | Conspiracy in the Rockies | 2022 |
| # 1813 | Myers, Cindi | Danger on Dakota Ridge | 2018 |
| # 2345 | Myers, Cindi | Danger Zone | 2026 |
| # 2164 | Myers, Cindi | Deception at Dixon Pass | 2023 |
| # 1807 | Myers, Cindi | Deputy Defender | 2018 |
| # 2044 | Myers, Cindi | Disappearance at Dakota Ridge | 2022 |
| # 2105 | Myers, Cindi | Eagle Mountain Cliffhanger | 2022 |
| # 2352 | Myers, Cindi | Explosive Evidence | 2026 |
| # 2064 | Myers, Cindi | Grizzly Creek Standoff | 2022 |
| # 2334 | Myers, Cindi | High Country Escape | 2026 |
| # 1847 | Myers, Cindi | Ice Cold Killer | 2019 |
| # 1962 | Myers, Cindi | Investigation in Black Canyon | 2020 |
| # 2177 | Myers, Cindi | Killer on Kestrel Trail | 2023 |
| # 1649 | Myers, Cindi | Lawman on the Hunt | 2016 |
| # 1578 | Myers, Cindi | Lawman Protection | 2015 |
| # 1728 | Myers, Cindi | Manhunt on Mystic Mesa | 2017 |
| # 2236 | Myers, Cindi | Mile High Mystery | 2024 |
| # 2058 | Myers, Cindi | Missing at Full Moon Mine | 2022 |
| # 1765 | Myers, Cindi | Missing in Blue Mesa | 2018 |
| # 2267 | Myers, Cindi | Mountain Captive | 2025 |
| # 1983 | Myers, Cindi | Mountain Investigation | 2021 |
| # 1968 | Myers, Cindi | Mountain of Evidence | 2020 |
| # 2117 | Myers, Cindi | Mountain Terror | 2023 |
| # 1716 | Myers, Cindi | Murder in Black Canyon | 2017 |
| # 2325 | Myers, Cindi | Peak Suspicion | 2025 |
| # 1680 | Myers, Cindi | PhD Protector | 2016 |
| # 1991 | Myers, Cindi | Presumed Deadly | 2021 |
| # 2171 | Myers, Cindi | Pursuit at Panther Point | 2023 |
| # 1482 | Myers, Cindi | Rocky Mountain Rescue | 2014 |
| # 1475 | Myers, Cindi | Rocky Mountain Revenge | 2014 |
| # 1936 | Myers, Cindi | Running Out of Time | 2020 |
| # 1792 | Myers, Cindi | Saved by the Sheriff | 2018 |
| # 2183 | Myers, Cindi | Secrets of Silverpeak Mine | 2023 |
| # 1889 | Myers, Cindi | Snowblind Justice | 2019 |
| # 1853 | Myers, Cindi | Snowbound Suspicion | 2019 |
| # 1759 | Myers, Cindi | Soldier’s Promise | 2018 |
| # 1771 | Myers, Cindi | Stranded with the Suspect | 2018 |
| # 1572 | Myers, Cindi | The Guardian | 2015 |
| # 2262 | Myers, Cindi | Twin Jeopardy | 2025 |
| # 1722 | Myers, Cindi | Undercover Husband | 2017 |
| # 2307 | Myers, Cindi | Wilderness Search | 2025 |