The Secret Adversary

Directed by Tony Wharmby

Written by Pat Sandys (writer), Agatha Christie (writer)

Cast: James Warwick as Tommy Beresford, Francesca Annis as Tuppence Cowley, George Baker as Whittington

Released 1983

Two old friends meet again and decide to earn a living as private investigators. Their first real case gets them in the hunt for a missing treaty going up against Bolsheviks.
Note: acted as a pilot/lead-in for the 10-episode series which started the week after this tv-movie aired.