World War Two espionage drama. Robert Newton stars as Captain David Grant, a British secret agent who leads a daring Allied attempt to rescue Swedish atomic scientist Professor Hansen (Martin Miller) from under the noses of Nazi officer Keitel (Herbert Lom) and his minions.

1950s British crime thriller. Robert Matthews (Emrys Jones) is arrested in Cornwall when he is mistaken for convict John Barlow, to whom he bears a striking resemblance. When Barlow (also Jones) hears of this, he makes his way to the man's cottage and takes his place. After surviving a local shipwreck Robert's fiancée Ann Farrington (Zena Marshall) is taken in by Barlow, who maintains his imposture but soon discovers that Matthews is not all he seems.