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.
EP2 Codename: Riding HighOct 26, 2012
Tim is asking for trouble when he falls for a woman in the Witness Protection Programme, and Marcus learns how to ride a bike.
EP3 Codename: Lie HardNov 02, 2012
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.
EP4 Codename: Mistaken IdentityNov 09, 2012
The Examiner is on star-spotting duties and casts Tim and Caitlin in a recruitment video. It seems like a perfectly good idea until the pair let their disguised identities get the better of them.
EP5 Codename: Family BondsNov 16, 2012
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.
EP6 Codename: Citizen LameNov 23, 2012
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.
EP7 Codename: Ball BustedNov 30, 2012
Marcus's hopes of organising the Summer Ball are dashed when the dreaded Mrs Godfrey usurps Philip as the school headteacher. Meanwhile, struggling to find a date, Tim tries to improve his luck with the ladies. Maybe he should take a leaf out of Bond's book.
EP8 Codename: Double OhDec 07, 2012
After bumping into his MI5 body double, who happens to be a genius, Tim agrees to compete for custody of Marcus. Moritz, meanwhile, is asking for trouble when, crossing all sorts of lines, he tries to woo a hostage's anxious girlfriend.
EP9 Codename: Pulp FrictionDec 14, 2012
While Chris tells one porky too many in a bid to turn Marcus into a celebrated author, Portis busily prepares for Caitlin's birthday, but fails to factor in a major obstacle in the form of saboteur Tim.
EP10 Codename: Last ScupperDec 21, 2012
Tim is given extra incentive to rekindle his romance with Caitlin after finding himself on an assassin's hit list. Marcus, meanwhile, has been biding his time and is in prime position to humiliate rival Nick at Justine's dinner party.
EP11 Codename: Show StopperDec 26, 2012
In an hour long Christmas special, the magic of Christmas has long been lost on Marcus and, when his party plans force the other kids to go on strike, he must make alternative arrangements. Meanwhile, 'tis not the season to be jolly if you're Portis. The agent's thoughts turn to revenge after he finds out about Tim and Caitlin having feelings for one another.
When an underachieving single father inadvertently becomes an MI5 agent, he must keep his government job a secret while battling his ex-wife for custody of their precocious son.