嫌犯 第四季

　　Ken Baxter stages a roof-top protest over his missing soldier son Pete whilst Pete's mistress Sophie is the victim of a hit and run incident. Pete's friend Eddie is a primer suspect as is Sophie's husband Ricky whilst Sophie's friend Caitlin also has something to hide. Ricky is arrested for the hit and run but when Ken is also killed Martha and her team must look elsewhere for the guilty party.