Seeking Solis by Josie Kerr

Special Investigator Johnny Richards is a short timer. With his retirement on the horizon, Johnny’s spending his days wrapping up old cases and seeing to unfinished business. Part of that unfinished business is his relationship with his former partner, Dolly Solis.
Dating Johnny when he was her partner would have been a bad idea, but now that Dolly Solis is a sergeant, a romantic entanglement could end both of their careers. That’s not a risk Dolly is willing to take.
Until she is. And after that one fateful night, Johnny is all in, but he and Dolly may never get their happily ever after when a foe from Johnny’s past returns. When Dolly disappears, Johnny calls on every resource he has as he seeks Solis.