David Callan, secret agent, is called back to the service after his retirement, to handle the assassination of a german businessman, but Callan refuses to co-operate until he finds out why this man is marked for death.
David Callan
Hunter
Schneider
Jenny
Toby Meres
Lonely
Waterman
The Greek
Liz, Hunter's Secretary
Dr. Snell
Arthur
George
Padilla
Wireless Operator
Security Porter
Smart Security Man
Shabby Security Man
Policeman
Old Lady in the Strand
Flag Lady