Harlequin Intrigue Series, Books in Order by Year – 1991
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| No. | Author | Title | Year | Approx. $ |
| # 153 | M. L. Gamble | When Murder Calls | 1991 | $3–8 |
| # 154 | Caroline Burnes | The Jaguar’s Eye | 1991 | $3–8 |
| # 155 | Rebecca York | Shattered Vows | 1991 | $5–12 |
| # 156 | Linda Stevens | One Step Ahead | 1991 | $3–8 |
| # 157 | M. J. Rodgers | Dead Ringer | 1991 | $3–8 |
| # 158 | Madelyn Sanders | Under Venice | 1991 | $3–8 |
| # 159 | Robin Francis | Double Dare | 1991 | $3–8 |
| # 160 | Elise Title | Shadow of the Moon | 1991 | $4–10 |
| # 161 | Patricia Rosemoor | Pushed to the Limit | 1991 | $4–10 |
| # 162 | Aimee Thurlo | Strangers Who Linger | 1991 | $4–10 |
| # 163 | Patricia Rosemoor | Squaring Accounts | 1991 | $4–10 |
| # 164 | Betsy Page | The Perfect Frame | 1991 | $3–8 |
| # 165 | Patricia Rosemoor | No Holds Barred | 1991 | $4–10 |
| # 166 | Leigh Daniels | The Basque Swallow | 1991 | $3–8 |
| # 167 | Rebecca York | Whispers in the Night | 1991 | $5–12 |
| # 168 | Laraine McDaniel | Against All Hope | 1991 | $3–8 |
| # 169 | Alice Orr | Past Sins | 1991 | $3–8 |
| # 170 | Carly Bishop | Fugitive Heart | 1991 | $3–8 |
| # 171 | Robin Francis | All Fall Down | 1991 | $3–8 |
| # 172 | M. L. Gamble | If Looks Could Kill | 1991 | $3–8 |
| # 173 | Jenna Ryan | Masquerade | 1991 | $3–8 |
| # 174 | Laurel Pace | Ghostwalk | 1991 | $3–8 |
| # 175 | Aimee Thurlo | Night Wind | 1991 | $4–10 |
| # 176 | M. J. Rodgers | Bones of Contention | 1991 | $3–8 |
Typical collector values are based on common paperback editions in Very Good condition. Exceptional condition, signed copies, or rare international editions may sell for more.
Notes on value
Most 1991 Harlequin Intrigue titles sell for $3–8 individually.
Rebecca York titles (#155 and #167) are generally the most sought-after from this year, often bringing $5–12.
Patricia Rosemoor, Aimee Thurlo, and Elise Title titles tend to command slightly higher prices than average due to their popularity with collectors.
A complete 1991 run (#153–176) typically has a collector value of $90–180, with higher prices possible for complete, unread sets.