While looking for a distraction on Halloween, Conrad treats a group of witches who send the ER into chaos. Also, Devon treats a patient who thinks he is being haunted by ghosts. Meanwhile, on the way back from his vacation, Bell picks up a hitchhiker who is not what he seems to be.
Elenco: Matt Czuchry , Manish Dayal , Bruce Greenwood , Malcolm-Jamal Warner , Shaunette Renée Wilson , Emily VanCamp , Jane Leeves , Jessica Lucas , Anuja Joshi , Melina Kanakaredes , Morris Chestnut , Moran Atias , Merrin Dungey , Andrew McCarthy , Kaley Ronayne .