The Christmas season is one of comfort and joy, sparkling lights and steam rising from cups of mulled wine at frosty carol services.A season of goodwill, as families and friends come together to forget their differences and celebrate. Unless, of course, you happen to be harbouring a grudge. Or hiding a guilty secret. Or you want something so much you just have to have it - whatever the cost.In A Very Murderous Christmas, ten of the best classic crime writers come together to unleash festive havoc, with murder, mayhem and twists aplenty. From a murder aboard a snow-bound train to a pantomime costume that takes on a life of its own, these are mysteries as rich and satisfying as a Christmas dinner.