Episode: Snakes and Ladders. Middleditch is away and Nigel Harper, his stand-in, annoys everyone with his fussy ways. Equally annoying is wealthy hypochondriac Mrs. Lyons, who demands her dog be treated after being bitten by a snake. David Cheriton gets involved with Jeffrey Carpenter, a depressed boy who has attempted suicide but things do not work out as he had hoped. Jill and Gordon Ormerod have a passionate kiss.