Hidden Things — Doyce Testerman

Watch out for the hidden things . . . That's the last thing Calliope Jenkins's best friend says to her before ending a two a.m. phone call from Iowa, where he's working a case she knows little about. Seven hours later, she gets a visit from the police. Josh has been found dead, and foul play is suspected. Calliope is stunned. Especially since Josh left a message on her phone an hour after his body was found. Spurred by grief and suspicion, Calli heads to Iowa herself, accompanied by a stranger who claims to know something about what happened to Josh and who can -- maybe -- help her get him back. But the road home is not quite the straight shot she imagined . . .