Ms Powers, 67, who starred in the US show Hart To Hart, flew back from Los Angeles yesterday but her magic wand wasn't enough to release her from the clutches of the UK Border Agency. A spokesman for the Mayflower Theatre in Southampton, where Ms Powers is starring in Cinderella, said that when she came to Britain in November her passport was not stamped and a copy of her work permit was lost. She was detained at Heathrow for more than an hour while the confusion was cleared up.