Supernatural Season 1, Ep. 3 “Dead in the Water”

Taking a break from the search for their father, Sam and Dean head to Lake Manitoc in Wisconsin for a possible case. Three drownings have occurred there within a year, with the dead bodies mysteriously disappearing in the lake. The brothers soon come to believe that the spirit of a young boy haunts the lake, and learn that the local sheriff (Daniel Hugh Kelly) and the father of the latest victim accidentally caused his death when they were children. Out for revenge, the spirit targets the sheriff's daughter Andrea (Amy Acker) and mute grandson Lucas (Nico McEown). It eventually pulls Lucas into the lake, so the sheriff gives himself over to the spirit, saving his grandson.

The Vampire Diaries Season 3, Ep. 03 "The End of the Affair"

Klaus and Stefan arrive in Chicago, where Stefan is reunited with a vampire who hasn’t really moved on from her interest in him decades earlier. In a flashback to Chicago in the 1920s, Stefan comes face-to-face with a shocking chapter from his wild past. After Damon gets a tip on Stefan and Klaus’ whereabouts from an unexpected source (Katherine), he and Elena follow their trail. Back in Mystic Falls, Tyler is concerned about Caroline and turns to Sheriff Forbes for help. Stefan also learns that Klaus might be running from someone who may be hunting him.