When Sam and Dean look into a murder at a museum, they learn a ghost from a merchant ship that sunk in 1723 may be at the heart of the mystery. After realizing “The Star” was the same ship that Crowley’s son Gavin McLeod should have been aboard, they enlist help from Rowena to track Gavin down. Kelly Kline, still pregnant with Lucifer’s child, takes refuge with a demon after an angel attempts to kill her.

Sam and Dean get a lead on Kelly Kline’s whereabouts. Mick drops by the bunker unexpectedly and decides to join the hunt.

Sam comes up with a way to stop Lucifer’s baby but Castiel has something else in mind for Kelly. Dean is furious when he finds out someone stole the colt. Kelly makes a bold choice about the baby’s future.