5/6. A mind-boggling mathematical conundrum - Fermat's last theorem - threatens to tip an eccentric maths professor (Paul Whitehouse ) over the edge. Will therapist Peter (Chris Langham ) have a eureka moment as he struggles to grasp the concept? Low-key comedy, also with Alison King. Writers Chris Langham and Paul Whitehouse
Director Declan Lowney ; Producer Jane Berthoud