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
CinemaSerf
Bill Travers does his best Stephen Boyd impersonation here as "Ryan", who leads a gang of scavenging sailors who survive an underwater earthquake that delivers a giant lizard into their hands (or nets). Determined to capitalise on their luck, they do a deal with "Dorkin" (Martin Benson) to exhibit t...