Doctor in the House

Hello Sailor! (5x13)

Air date: Dec 08, 1973

In debt and spurned by Annabel, Duncan decides to join the Navy but, when Annabel agrees to marry him, needs a way of getting out, so feigns madness. The psychiatrist testing him is also mad but the Surgeon Commander agrees to release Duncan if he keeps quiet about it. Duncan is released only to find that Annabel has now joined up.