Plowing through Jeff Shelby’s interesting “Thread” series of mystery/thrillers. The hero, Joe Tyler, as you know if you’ve been following these reviews, is a former cop in Coronado, California. His life changed when his little daughter was kidnapped, and he spent years single-mindedly chasing her down. In the end he did locate her, now a teenager, and brought her home. At the beginning of Thread of Doubt she’s just back from college for Christmas break. She wants to talk to Joe about something, but he has trouble making time. He’s been teaching high school, and is behind on his class work. On top of that, he’s got a new investigation to look at in his free time.

He hadn’t intended to look for another kid, but the request came from an old cop friend, Mike Lorenzo. Mike’s nephew, for whom he was a sort of father figure, has disappeared. The young man has a history with drugs, but had seemed to have cleaned up his act. He was a musician, and his band looked to be on the brink of a commercial breakthrough.

Joe talks to the young man’s friends and girlfriend. What he learns brings him to a grim discovery, and grim solution to the mystery.

Thread of Doubt was a fairly by-the-numbers effort, and the end surprisingly low-key. But I like the characters and have had a good time following Joe’s odyssey. I enjoyed Thread of Doubt, and recommend it, with only minor cautions.