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
Eric Porter
Carl Möhner
Catherine Schell
Peter Egan
Russell Hunter
Kenneth Griffith
Michael Da Costa
Veronica Lang
Clifford Rose
David Prowse
Don Henderson
Nadim Sawalha
David Graham
Yuri Borienko
Peter Symonds
Raymond Bowers
Joe Dunlop
Mollie Maureen
Anne Blake