Pie in the Sky 2x9

There's a spate of burglaries, the local police station's closed down and the great and good of Middleton, headed by Mr. Chukky Chicken' Barry Wilkes, want Crabbe to catch the thief, popularly believed to be teenager Karl Elves or 'Pikey'. To their dismay, Crabbe is much more interested in pike than 'Pikey'.