When a deathbed confession leads to the discovery of a body in Foxfoot Wood, a 20-year-old missing person's case is now a murder investigation and a link is made with a bikers' gang, the Dungeon Kings. As Detective Chief Inspector Hennessey and his team try to investigate, it seems that the bikers' vow of silence is still as strong as it was all those years ago, and many gang members refuse to discuss those days of dangerous initiation rites and violent dares. But then another ex-member is found murdered and it seems that someone is determined to keep old secrets dead and buried . . .