Dick Powell's Zane Grey Theatre (1956)

S18E9 Full Circle (1)

In the depths of space, at an uncertain time, the TARDIS is en route to Gallifrey when it encounters a bizarre anomaly. Upon materializing, the scanner indicates they’ve arrived at the Time Lord homeworld. However, the travelers soon realize they’ve actually slipped into the negative pocket universe of E-Space, landing on the planet Alzarius, where the rules of evolution are vastly different.