One last lie
(Book)

Fifteen years ago a young warden was sent on an undercover mission to infiltrate a notorious poaching ring and never returned. He was presumed dead, but his body was never recovered. When an antique warden badge resurfaced at a flea market, it was connected to the cold case, which the Maine Warden Service would rather forget. Then retired game warden Charley Stevens vanishes without explanation, and his surrogate son, Warden Investigator Mike Bowditch, suspects it is linked to the badge and the cold case. -- adapted from jacket.