First broadcast 4th October 1976.
Robert Hargreaves, who has an apparently distinguished military background, joins Regan's team.
John Thaw - Regan
Dennis Waterman - Carter
Garfield Morgan - Haskins
Norman Eshley - Det. Sgt. Robert Hargreaves
Arthur English - Tug Wilson
George Sweeney - Tim Cook
Bernard Spear - Benny
Lesley Dunlop - Eileen Shaw
Ralph Arliss - Ames
Norma Streader - Helen Hargreaves
John Alkin - DS Tom Daniels
Anne-Louise Wakefield - Susie Farmer
Shay Gorman - Shaw
Tony Allen - Bill the Driver
Maxwell Craig - Flying Squad Officer/Morman
Alf Mangan - News Vendor
Mike Reynell - Squad Officer
Ron Watkins - Flying Squad Officer
