AM
Turlough was employed by The Black Guardian to try to destroy the Doctor, if I remember correctly he sneakedinto the Tardis, just before the Doctor entered and "took off"
don't think the 5th dr chose to travel with any of his companions, cant remember how turlough joined the dr but turlough rescued peri from drowning and took her on the tardis and the dr took off unaware she was on board
Turlough was employed by The Black Guardian to try to destroy the Doctor, if I remember correctly he sneakedinto the Tardis, just before the Doctor entered and "took off"