Heaton organises a raid on a crack house, but little goes to plan when the target drug dealer escapes, an elderly woman is found locked in squaller in the property, and two seriously ill neighbours find their door being kicked in when Heaton suspects that the suspect may be hiding in their attic. When the team finally catch up with the dealer, he denies all knowledge of anyone being held captive, until they discover that the elderly victim is his Nan - and that he has been using her house as a crack factory. Meanwhile, Smith is paired with recently transferred PC Diane Noble to investigate an assault on a homeless alcoholic, but the attacker turns out to be someone they least suspect. (thetvdb.com)