Kenneth MoreRichard Hannay Brenda De BanzieNellie Lumsden Barry JonesProfessor Arthur Logan Faith BrookMandy Robinson ("Nannie") Andrew CruickshankSheriff Betty HendersonMrs, MacDougal Marianne StoneHospital Administrator (uncredited) Jill HaworthSchoolgirl on Train (uncredited) Peter Vaughan2nd Police Constable on Train (uncredited) Carol WhiteSchoolgirl in Assembly Hall (uncredited) Bill SimpsonBridegroom (uncredited) Sam KyddTrain restaurant staff (uncredited) Michael BrennanDetective on Train (uncredited) Bruce SetonPoliceman on Train (uncredited) Frank HarveySceneggiatura 
