It's Valentine's Day and bounty hunter Stephanie Plum needs a relationship expert. One who goes by the name of Annie Hart. Because Annie is wanted for armed robbery and assault with a deadly weapon.

Stephanie's shadowy but enigmatic friend Diesel knows where she is, and he's ready to make a deal: he'll help her get Annie, if Stephanie plays matchmaker to several of Annie's most difficult clients.

But someone wants to find Annie even more than Diesel and Stephanie. Someone with a nasty temper. And someone with 'unmentionable skills'.

With Stephanie in over her head, things are sure to get a little dicey — and a little explosive!