Doctor Who - Short Trips - The Other Woman (Unabridged‪)‬

UNIT is called in when an alien escape pod brings a woman to the Kent countryside.

The Doctor offers to repair her stricken, dimension-hopping ship, seeing an opportunity to escape his exile. But while Callandra charms the Doctor and the other men of UNIT, Jo is less trusting. Are her suspicions well-founded or is there another green-eyed monster at work?