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'''4.50 from Paddington ''' is a detective fiction novel by Agatha Christie, first published in November 1957.<ref>[https://en.wikipedia.org/wiki/4.50_from_Paddington 4.50 from Paddington on Wikipedia] (retrieved 7 January 2017)</ref> A Mrs. McGillicuddy, a friend of Miss Marple's , sees a woman being strangled in a passing train running parallel to her own. When police cannot find a body and doubt the story, Miss Marple enlists a professional housekeeper to go undercover.<ref>[http://www.imdb.com/title/tt0092497/ Internet Movie Database] (retrieved 7 January 2017)</ref>  This version is a full length BBC TV movie first broadcast on 25 February 1987 featuring Joan Hickson as Miss Marpleand Mona Bruce as Mrs. McGillicuddy.

Filming saw the most intense use of the railway since [[The Seven-Per-Cent Solution]], involving multiple locos and use of the re-laid section of the [[Stourport Branch | Stourport branch]], necessary to film the sequences of parallel running trains. The actress witnessing the crime was seated in a compartment of [[GWR 5883 Brake Third]]<ref>SVR News 149, Winter 2004-05</ref><ref group="note">The article in SVR news, written many years after filming took place, states this was Joan Hickson (Miss Marple). However the film plot suggests it would have been Mona Bruce</ref>.

*[http://www.imdb.com/title/tt0092497/ Internet Movie Database] (retrieved 7 January 2017)<br>[https://www.youtube.com/watch?v=xaZMecZQl_c YouTube] (retrieved 7 January 2017)