Nick Broomfield's quest for the real Sarah Palin involves battling the icy snows of Alaska in mid-winter, the school friends, family and Republican colleagues that in previous days gave their heart, soul and belief ot the charismatic, charming and intoxicating ex-hocxkey mum.

But it's not all plain sailing. people are frightened to talk, and Wasilla makes Twin Peaks look like a walk in the park - a devout evangelical community of 6,000 people and the crystal meth capital of Alsaka.