Sonia is pleased when she receives an unexpected visit from Sarah but is concerned by her fresh bruises and cuts. Sarah tells Sonia that she was mugged the previous evening and Sonia invites her in. However, as Sarah begins to discuss Jamie, Chloe and Sonia's past in detail, Sonia is rattled. Her suspicions are confirmed when Sarah's façade slips and she tells Sonia that Martin only married her out of guilt. As Sonia begins to panic, Martin desperately bangs on his cell door in a bid to be let out, sure that his wife is in grave danger. Martin arrives just as Sarah is lunging a knife towards Sonia, and jumps infront of her taking a stab wound to himself. (thetvdb.com)