Greedy sailors capture a giant lizard off the coast of Ireland and sell it to a London circus. Then its mother shows up.
Bill Travers
as Joe Ryan
William Sylvester
as Sam Slade
Vincent Winter
as Sean
Christopher Rhodes
as McCartin
Joseph O'Conor
as Prof. Hendricks
Bruce Seton
as Prof. Flaherty
Martin Benson
as Dorkin
Maurice Kaufmann
as Radio Reporter
Basil Dignam
as Admiral Brooks
Barry Keegan
as Mate
Tommy Duggan
as First Naval Officer
Howard Lang
as First Colonel
