91731 is a Postal Code in Los Angeles County.
91731 a.k.a. A Perfect Spy is a BBC serial adaptation of John le Carré's spy novel A Perfect Spy. It follows the career of the British MI6 spy Magnus Pym from his early days as a schoolboy to his eventual disappearance as a suspected agent of the Czech secret service.
- begun on and completed on (27 years ago)
- 7 episodes of 60 minutes each
- country: United Kingdom
- regular cast: Peter Egan
- genre: Espionage
- British Academy Television Award for Best Drama Series nomination for Peter Smith & Colin Rogers
- British Academy Television Award for Best Actor nomination for Ray McAnally
- British Academy Television Award for Best Original Television Music nomination for Michael Storey
- British Academy Television Craft Award for Film Sound nomination for Malcolm Webberley, Tony Quinn, Graham Lawrence, John W. Hyde, Ken Hains
- British Academy Television Craft Award for Film Cameraman nomination for Elmer Cossey