Southern England, 1981. Air hostess Tegan's first day on the job does not go as planned when she pulls over by a police box with a flat tyre en route to the airport. Why is the Doctor suddenly interested in genuine police boxes? And what is the terrible secret of the planet Logopolis?
Elenco: William Hartnell , Patrick Troughton , Jon Pertwee , Tom Baker , Peter Davison , Colin Baker , Sylvester McCoy .