DS Ramani De Costa investigates allegations of child abuse against DC Terry Perkins' brother, Ben. PCs Honey Harman and Steve Hunter attend an incident at a dog track, and see DC Jim Carver talking to Harman's ex-fiancé, Fletch. PCs Tony Stamp and Reg Hollis are called to an incident of vandalism at a church. DS Samantha Nixon and profiler Dr Hugh Wallis are convinced that Abi Nixon has been abducted.