Dr. Decker returns from Africa after a year, presumed dead. In that year, he discovered a way of growing plants and animals to an enormous size. He brings back a baby chimpanzee to test out his theory. As he has many enemies at home, he decides to use his chimp, 'Konga', to 'get rid of them'. Then Konga grows to gigantic proportions and wreaks havoc all over London!
Michael Gough
as Dr. Charles Decker
Margo Johns
as Margaret
Jess Conrad
as Bob Kenton
Claire Gordon
as Sandra Banks
Austin Trevor
as Dean Foster
Jack Watson
as Supt. Brown
George Pastell
as Professor Tagore
Vanda Godsell
as Bob's Mother
Stanley Morgan
as Inspector Lawson
Grace Arnold
as Miss Barnesdell
Leonard Sachs
as Bob's Father
Nicholas Bennett
as Daniel
