Cathy and Gordon plan to turn a bathroom into a darkroom. After watching their new tenants move in, the Crosses begin to suspect that one of them is a man. George reads of his heroism in the newspaper - but will Marie respect his decision not to reveal his identity?

Paul complains to Harry about Pat's mode of transport; but, surprisingly, Harry defends his tenants. Andrew suggests to Karen that they go away for a weekend to look at universities. Damon tells Sheila he is thinking of moving to London.