Clarissa grows increasingly suspicious when she spots Harry and Liz together and vows to catch them out.
A bit of detective work using Harry's mobile soon proves to her what she thought...
Meanwhile, Rosie is still furious with her mum and dad for not believing that John Stape kidnapped her.
Elsewhere, Vernon manages to sell one of his songs and announces heâs off to London.
But why is he still miserable?