P.C. Melvin sees a chemist being robbed, but he has powder thrown in his face and the thieves escape. D.C. Carver is conducting an obbo in the house of a lonely, amourous woman. He spots what looks like a drug exchange and pursues the car, but is told to relinquish the pursuit to the drugs squad from the Yard. W.P.C. Martella investigates a truancy case, where 14-year-old Turkish boy Omir is being looked after by his cousin ""Auntie"". D.S. Roach is pushed over in a public toilet by a man picked up by another bloke. He gets a tip-off from his transvestite snout, Roxanne, about a local barmaid running rent-boys in the area. Martella recognises the address as that of her missing Turkish boy, and she and Roach raid the flat and arrest Auntie.