First broadcast 7th October 1978.

Whilst Doyle is on a date with Kathie Mason his flat is robbed and a powerful laser gun which he was given to test is stolen.

Gordon Jackson - George Cowley
Martin Shaw - Doyle
Lewis Collins - Bodie
Cheryl Kennedy - Kathie Mason
Bryan Marshall - Preston
John Stratton - Brownie
Tony Caunter - Maurice Richards
Diana Weston - Ruth, CI5 Girl
Frank Barrie - Martell
Martin Wyldeck - Jack
Malcolm Hayes - Forensic Man
Jeillo Edwards - West Indian Woman
Maria St. Clare - Singer (as Maria St Clare)
Vicki Michelle - Jo