Red Sky at Morning Supernatural : Season 3 Episode 6

Bela gets in the way yet again as Sam and Dean are investigating multiple victims who drowned even though they were nowhere near water. Sam and Dean make the creepy discovery that the victims all saw a ghost ship right before dying. They tell Bela to stay away, but she's not so willing to leave, as someone's paying her a lot to solve the same case Sam and Dean are investigating.