Kate Dickenson faces a big day with the looming announcement of her promotion to Superintendent, but her fellow registrar James makes his own impromptu confession.

Kate reluctantly steps down from her promotion, with Judy blackmailing her. Meanwhile, Kate is shocked to discover Kristina and Amir's wedding has been given the green light by immigration.

An anonymous email shocks the register office, leaving Kate absolutely mortified and all eyes turn to Judy as the culprit; Rob and Kate panic and call the police when Lucy goes missing.

Kate is horrified when she discovers that Judy sent the footage to Rob on a USB stick but doesn't know if he has seen it. Meanwhile, the registrars prepare for the raid on Amir and Kristina's wedding.

Kate has to choose between her head and her heart after Rob's surprise proposal; Kate is stunned to discover the true reason Amir and Ramin knew about the sham marriage raid.

Kate has to deal with the consequences of her actions when Rob confronts her about some photographs; the team prepare a sting to catch Maria in the act, but it is not all it seems.