The Man Within is a 1947 British, Technicolor, adventure, crime, drama film, directed by Bernard Knowles and starring Ronald Shiner as Cockney Harry, Michael Redgrave, Jean Kent, Joan Greenwood and Richard Attenborough.

The story is told from the point of view of Seaman Andrews (Richard Attenborough), the ward of 19th-century smuggler chieftain, Carlyon (Michael Redgrave).

Feeling persecuted by his stern disciplinarian guardian, Seaman Andrews jumps ship and turns Carlyon over to the customs officials.

To bind the bargain, Lucy (Jean Kent), mistress of the Crown's Attorney, makes love to the impressionable, misguided Andrews.

Finally realizing that the forces of justice are no more ethical than his fellow smugglers, Andrews refuses to testify against Carlyon, and is himself thrown into prison.