The Dog It Was That Died

Directed by Peter Wood

With Alan Bates, Alan Howard, Simon Cadell, Sylvestra Le Touzel and Geoffrey Chater

Rupert Purvis jumps off a bridge onto a dog, causing problems for Blair, his superior at MI5. Blair must convince Hogbin, the agent who's been tailing Purvis, of which side Purvis is really on--once he finds out what it is.