A 27-year-old woman was robbed at gunpoint on her doorstep.
Three men - one wearing a Halloween `scream' mask - called at her home on Aquamarine Drive in Fartown at 8.30 last night.
The pointed a silver handgun at her and demanded money and property. They escaped with a mobile phone.
The gunman is African- Caribbean, about 5ft 9in and slim. He wore a long black coat.
Another wore the mask and the third, who had his face covered, wore red and silver Nike Shox shoes.