OFFER EXPIRED: Exclusive Preview Screening: Rare Exports - A Christmas Tale on Sunday 28 November

In the depths of Lapland's Korvatunturi Mountains, 486 metres deep, lies the closest guarded secret of Christmas. The time has come to dig it up. Based on the award winning shorts of director Jalmari Helander comes a seasonal film like no other. On the eve of Christmas a young boy sets out to discover the truth behind several strange goings on in his small isolated village. Why have all the reindeer been slaughtered? Who took all the hairdryers and radiators? And where have all the children gone? Seal the chimney. Lock the doors. Hide your children. This year the real Santa Claus is coming to town. Certificate 15. In cinemas from Friday 3 December Extra members can attend a preview screening on Sunday 28 November at 11am at various cinemas around the UK Find out more at www.santa4sale.com Copyright © 2010 Icon Films. All rights reserved. Take up this offer Click here to take up this offer Help with Offers and Events • You need to be a member of Extra in order to see the redemption pages. You can sign up here • You will need to be signed in to theguardian.com at the top of the screen to be able to take up any offer or book tickets