We love the strapline for this event: 'Dungeon Puts the 'Grot' into Grotto!' with Satan's - not Santa's - grotto. London's most gruesome attraction is proud to have the antidote to Christmas. So to mark one of the cheeriest - and cheesiest - holidays they're putting on a grisly display, spreading ill-will amongst men. Bucking the festive trend will be elves impaled on spikes and robins roasting over an open fire. Children can try their hand at the 'yucky dip', get made up as a scary monster, follow Jack the Ripper and ride the Traitor: Boat Ride to Hell. These spooky trails are what the London Dungeon does best,