Doomwatch are alerted to reports of a number of attacks on humans by rats. Toby and Bradley investigate the house of Mr. and Mrs. Chambers, victims of a recent attack; the two scientists lay traps in the kitchen, but the rodents display unusual intelligence by jamming the traps open using cutlery found on a worktop, and then viciously attack the men. Meanwhile, Ridge becomes involved with Doctor Mary Bryant, who has been conducting experiments on a group of rats in a room in her flat - but the rats have managed to escape, and have now turned carnivorous.
Did You Know?
Writer/Producer/Director Terence Dudley
, his wife and son appear in the rat attack sequences. See more
The (undated) "Daily Mirror" article extracts read aloud by Fred Chambers are conveniently printed alongside the masthead, together with the appropriate place to break off and later resume reading. See more