Blue Book — Tom Harley Campbell

Homicide detective John Burke is lured out of retirement when a young man arrives in Dayton, Ohio with a tantalizing clue to a haunting cold case -- the unsolved death of a Black cop from Mississippi.

As Burke digs into the case, a trail of unexplained deaths leads him to nearby Wright-Patterson Air Force Base, where Project Blue Book -- the U.S. government's long since shuttered study of UFO phenomena -- rears its ugly head.

Burke is completely mystified by the case, and soon comes to a shocking realization.

He could be next.