The Best Episodes Written By Simeon Goulden

Tim's got a lot on his plate this week, thanks to a homeless Eastern European man and a social worker named Paula, who happens to be absolutely bonkers.

Tensions simmer at school when new boy Nick stands against Marcus for school president. Tim tries to help Marcus but, given previous form, is more likely to hinder the campaign. Operation Sabotage is in full swing back at MI5 as Tim offers Caitlin and her presumed-dead but now actually very much alive fiancé Portis some rather dubious relationship advice. New counsellor Owen makes an impression too, taking a particular shine to Judith.

Maintaining a secret identity is a mighty ask, and there's every chance that Tim's cover is going to be blown when he's forced to take Marcus to work with him. Also, there's extra cringe in this week's therapy session when Owen leads Philip and Judith in an elaborate role-play exercise.

After Judith receives a blow to the head she wakes up believing that she's still married to Tim. Poor Philip is understandably devastated, but on hand to pick up the pieces is Chris, who believes the best course of action is to reintroduce him to the dating scene right away.

Marcus is obnoxiously bright, the kind of kid you imagine becoming a world leader, or, alternatively, criminal mastermind. After being sent on work experience, though, he develops a taste for retail. Meanwhile, considering his - to put it politely - unorthodox approach to his job, it's no surprise to learn that The Examiner's appraisal doesn't go to plan.

Tim is asking for trouble when he falls for a woman in the Witness Protection Programme, and Marcus learns how to ride a bike.

Belle's ability to separate work from pleasure is tested when she meets an alluring and dangerous new client. Meanwhile, Poppy's curiosity gets the better of her.

Belle travels to New York City to oversee production of the movie based off of her books, but thing don't go as she expects.