Alarge,black,four-posterbed,possessedbyademon,ispassedfromownertoowner.Inthe15thcentury,aknightkilledthedemon,butthedemon'sbloodsplashedontothebed,causingthepossession.Thosewhocomeintocontactwiththebedarefrequentlyconsumedbyit(victimsarepulledintowhatisapparentlyalargechamberofdigestivefluidsbeneaththesheets). 　　Arun...