A covert investigator and a bubbly realtor in training fight crime together in this penpal, secret crush romance.

Holt Winchester is the nicest guy. Everyone in town likes and trusts the friendly auto detailer by day and cowboy by night, which makes him the perfect candidate for K&G Security's new covert ops program. Few people understand he's not entirely at the top of his game after a recent abduction.

Because of what happened to her before moving to town, Bonnie Yates is one of those few people. Fortunately, she has five overprotective brothers to keep her safe from now on. The downside is they scare away every prospective boyfriend. Hoping to turn her friendship with Holt into more, she asks him to be her penpal, never dreaming their letters would lead to a crime fighting partnership of sorts. As it turns out, two heads are better than one. She can only hope and pray that two hearts will also prove to be stronger than one, as their case takes a deadly turn.