Dog Walk Detectives: A Ron Webb mystery

A young man is found bludgeoned to death by dog walkers on a recreation field in Suffolk. The grumpy DCI Webb and his younger cocky colleague DS Newton have difficulty finding out who he is or why he was there. Piece by piece, they and their team painstakingly search for clues about his identity, address and why someone should want to murder him? They are told that he was a reticent, quiet, and inoffensive individual, so did he find out too much about someone or something? Are the dog walkers all as innocent as they appear? We get rare glimpses of the murder investigation through their eyes and interactions. Does his ex-girlfriend or college tutor hold the key to the mystery, or has the case a more international dimension?