Halloween is a night to play no trick and no treat, turning lights off and closing curtains to pretend to be out when a zombie apocalypse comes knocking. The young devils swiftly stampede next door at no answer in their ravenous and unstoppable rampage for free sweets. I feel a little guilty hiding behind the settee when, across town, my grandkids join the throng dipping hands into tubs of Heroes, Celebrations and Quality Street. So let me salute those who answered doors to my own, to put