Ashton attends a call to a case of criminal damage in an off-licence, and discovers that the perpetrator is none other than the Superintendent's brother, James Chandler. Thrown off-kilter by his brother's arrest, Chandler blows a vital transfer interview at Scotland Yard, whilst back at the station, Meadows convinces James to make a statement, accusing Chandler of raping Louise Marsden at Hendon. Chandler realizes he is rapidly running out of options, but he still has one card up his sleeve - his imminent marriage to McAllister. Meanwhile, Young continues to fight her fears when MIT confirm that Martin Porter, her ex-fiancé, is now the prime suspect in the serial killer enquiry.