The legendary Bela Lugosi as "the Vampire" teams up with Britain's much-loved "Mother Riley" in this hilarious comedy adventure. The Vampire plans to control the world with the help of his robot, which accidentally gets shipped to Mother Riley. Through radar control, he contacts the robot and orders it to come to him, bringing along Mother Riley! But his life is turned upside down when he holds this most meddling of mothers captive.
| Actor | Role |
|---|---|
 Bela LugosiVon Housen | Von Housen |
 Arthur LucanOld Mother Riley | Old Mother Riley |
 Dora BryanTilly | Tilly |
 Philip LeaverAnton Daschomb | Anton Daschomb |
 Richard WattisP.C. Freddie | P.C. Freddie |
 Hattie JacquesMrs Jenks | Mrs Jenks |
 Graham MoffattThe Yokel | The Yokel |
 David HurstMugsy | Mugsy |
 Judith FurseFreda | Freda |
 Ian WilsonHitchcock | Hitchcock |
 Dandy NicholsMrs. Mott | Mrs. Mott |
| PPeter BathurstBBC Announcer | BBC Announcer |
 Charles Lloyd PackSir Joshua Bing | Sir Joshua Bing |
 Alexander GaugePolice Constable (uncredited) | Police Constable (uncredited) |
 John Le MesurierScotland Yard Man (uncredited) | Scotland Yard Man (uncredited) |
 Laurence NaismithPolice Sergeant at Desk (uncredited) | Police Sergeant at Desk (uncredited) |