In 1815, Michael Martin, member of an Irish revolutionary society, turns highwayman to support it, and soon becomes an outlaw. In Dublin, he meets famous rebel "Captain Thunderbolt" and becomes his second-in-command, under the name "Lightfoot."

• Universal International Pictures
• Rock Hudson
• Barbara Rush
• Jeff Morrow
• Kathleen Ryan
• Finlay Currie
• Denis O'Dea
• Geoffrey Toone
• Hilton Edwards