First broadcast 8th May 1975.
A group of London youths are linked to several deadly bombing attempts.
George Sewell ... Detective Chief Inspector Alan Craven
Roger Rowland ... Detective Sergeant Bill North
Norman Jones ... Captain Dwyer
Roger Lloyd Pack ... Paul
Diana Quick ... Sarah
Billy Hamon ... Chris
Hilda Barry ... Mrs. McCafferty
Leon Eagles ... Borotchek
Sara Aimson ... Rosemary Brown (as Sarah Aimson)
John Abbott
Trevor Martin ... Bomb Disposal Officer
Linda Regan
Sheila D'Union
Charles Pemberton ... Policeman
Leslie Schofield ... Police Car Driver
Bruce Callender
Alan Gibbs ... Fireman
Bill Hibbert ... Fireman
Edward Sinclair ... Man in street
