Lennox attempts to use his influence and contacts to get Nixon appointed to the serial killer enquiry as a profiler, but Ross has other ideas and continues to ignore Nixon's intelligence. Klein interrupts a night out between Rickman and Simon Kitson, and tensions soon flare between the two highly-charges individuals. Chandler tries to maintain some respectability by hastily marrying a pregnant McAllister to save face amongst his colleagues. As Meadows tries to stop McAllister walking down the aisle, Webb discovers that Chandler has betrayed him and has secretly been trying to bring him down. Can Meadows and Webb piece together enough evidence to nail Chandler once and for all?