Mark is worried he's drifting apart from Sophie, so immediate action is called for: he must propose... and where better than the Quantocks?

Sophie and her new gay friend, Dom, take Mark to a gay club, where he pretends to take drugs. Meanwhile, Jeremy is on jury service, where he starts an ill-advised affair with the defendant.

Mark's plans for a productive week off work go out the window when his sister comes to stay and, of course, Jeremy clearly has the hots for her.

Jeremy plans to throw a secret magic mushroom party in the flat, where he hopes to seduce his ex, Big Suze.

Jeremy is forced to consider getting an old friend sectioned. And he soon realises sectioning could be a good way of getting rid of other problem people...

Some muggers steal Mark's precious BlackBerry, which puts him off his stroke with Sophie. Meanwhile, Jeremy faces a tricky dilemma over the love of his life and a potential threesome.