First broadcast 7th March 1978.

A quiet, middle-aged couple living in Chelsea start to receive threatening letters through the post - and then things take a sinister turn as their beloved poodle, Tina, is kidnapped.

Zena Walker ... Gina Reynolds
Benjamin Whitrow ... Edward Reynolds
Brian Stirner ... Clarence Duhamel
Paul Angelis ... Tom Choley
Leon Eagles ... Kowajinski
Prentis Hancock ... Desk Sergeant
Hyma Beckley ... Man in Street