On the surface, Jasveen Sangha lived the life of a glamorous businesswoman, but behind the designer wardrobes and caviar feasts lurked a sinister secret. Dubbed th e 'Ketamine Queen of Los Angeles', Sangha was in fact running a "drug-selling emporium" from her seemingly unremarkable home in North Hollywood. And it was this grubby line of business which resulted in the death of one of the best-loved sit-com stars of all time. Matthew Perry, famed for playing Chandler Bing in Friends, was just 54-