This a comedy thriller but it isn't funny and doesn't thrill.However it is of interest.First of course the train crash which is quite spectacular.Secondly for the views of everyday England in the twenties,not so different from today.Thirdly because the film was made on the cusp of sound.It had a score and we hear the villains voice in an incriminating recording of a telephone conversation.Clearly Gainsborough were trying to make this film acceptable to an audience who wanted nothing but talkies.One of the big problems of a film such as this was the number of interrupted required.It does become rather tiresome.