Watch Agatha Christies Marple Geraldine McEwan online: Episode 3 4.50 from Paddington

A railway journey proves eventful for Elspeth McGillicuddy, when a parallel train swerves sharply toward the 4.50 from Paddington and she finds herself staring into the panic-stricken face of a woman being throttled. However, when no body is found, the authorities dismiss her story as the ramblings of an elderly woman - but Elspeth's old friend Miss Marple knows better. Geraldine McEwan and Pam Ferris star, with Niamh Cusack, John Hannah, Amanda Holden, Celia Imrie, Griff Rhys Jones, David Warner, Jenny Agutter and Rob Brydon

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