Captains John Fellows and Henry Wynne-Walton finish their Army training at Sandhurst Military Academy and are sent to the Middle-East. John is to lead a parachute battalion while Henry is put in charge of a platoon of armoured cars of the Household Cavalry. John is constantly being told by his father, an ex-Guards officer that he is not as good as his brother who was killed during the war.

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!

A court case ensues when a 47-year old man is caught with a 15-year old girl, and he claims he never knew she was so young.

Amateur detective Miss Jane Marple investigates the murder of a young woman whose body is found in the library at Gossington Hall, home of Colonel and Mrs. Arthur Bantry.