Claie and Simon have found their home occupied by a complete stranger who says he heard about it on Gumtree. Hamza has been locked out of his own house after doing a favour for a friend. Claud's tenant won't take his calls or open her door, leaving him 30k in debt.

Catching up with some of the previously featured tenants and landlords. Lesley and Mark's tenant turned out to be a con artist scamming students. Ben investigates an unlicensed boarding property in Deptford. Nicholas finally returns to his house only to find it booby-trapped.