Episode Detail: Agatha Christie's Miss Marple: At Bertram's Hotel - Mystery!
In the conclusion of "Agatha Christie's Miss Marple: `At Bertram's Hotel,' " the behavior of Lady Sedgwick and her daughter (Helena Michell) helps Miss Marple solve the doorman's murder. Miss Marple: Joan Hickson. Luscombe: James Cossins. Selina: Joan Greenwood.