When famous escapologist Harry Houdini slips into a near-death state while practising his act, something horrible from the boundaries of consciousness follows him back. Now Houdini must join forces with the era's most famous aficionados of the uncanny - Sir Arthur Conan Doyle, Charles Fort and H.P. Lovecraft - and attempt to defeat an evil force which wants to enslave the human race. However, this intrepid group must not only face the enemy's terrifying agents on Earth, but also a traitor in their midst. Not to mention the dire, eldritch horrors which lurk just beyond the veil of sanity...