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.
Edward Woodward
as David Callan
Eric Porter
as Hunter
Carl Möhner
as Schneider
Catherine Schell
as Jenny
Peter Egan
as Toby Meres
Russell Hunter
as Lonely
Kenneth Griffith
as Waterman
Michael Da Costa
as The Greek
Veronica Lang
as Liz, Hunter's Secretary
Clifford Rose
as Dr. Snell
David Prowse
as Arthur
Don Henderson
as George
