7.1 334 When the TARDIS malfunctions and the doors open in the time vortex, the travelers and their Ship shrink to the size of insects. When they arrive on Earth, they uncover a murderous plot involving a new insecticide - but how can they stop the crime in their miniaturized condition? (Originally broadcast in three parts.)
Runtime: 23 min
Starts: William Hartnell, William Russell, Jacqueline Hill, Carole Ann Ford, Alan Tilvern
Director: Mervyn Pinfield