An Invitation to Murder — Leighann Dobbs

Lady Katherine only has one week to catch the Pink Ribbon Killer. Not only to stop the killing but also to prove her skills at detection to her father and win her dowry and independence.

There's only one catch--she has to take one last matchmaking job to do it. Never mind that the match is impossible, all the better because if she fails, then no one will seek her services again. The job provides the perfect cover especially when her peculiar investigatory techniques are mistaken for unconventional matchmaking attempts.

Things would go a lot smoother if she weren't knee-deep in suspects and thwarted at every turn by a rival matchmaker. But when the killer strikes again, Katherine's investigation leads down a dangerous path. Too late, she discovers that she has a lot more to lose than her dowry...