Capture — Elle Rush

If Constable Brendan Booker wants his temporary assignment to the Homicide Division to become permanent, he needs to up his game. He knows he can play a bigger role in catching the Calendar Killer, but it would be easier to approach his inspector if he weren't sleeping with the man's daughter.

Rookie EMT Audrey Holland is tired of having to prove herself: to her new teammates, to her empty-nester father, and to her new boyfriend. The sooner they all learn she can take care of herself, the sooner she can do her part in taking care of her city.

With the net closing on Winnipeg's most prolific murderer, the killer grows more desperate and unpredictable. Neither of them can afford any distractions, or they risk letting the Calendar Killer take them both out in his final blaze of glory.

Capture is Book 3 of the Calendar Killer trilogy. The romance is stand-alone but the series is best read in order.
Book 1: Pursuit
Book 2: Entrap