In this episode, Elena and Damon travel to Denver to check on Jeremy and use his ability to talk to the dead to identify their vampire bloodline.
: Elena and Damon share a motel room where the ghost of Rose appears to Jeremy. She reveals she was sired by Mary Porter and encourages the romantic tension between Damon and Elena, famously noting Damon's "dripping" allure. [S3E19] Drippin Episode
: Elena discovers that Jeremy has been hanging out with a "bad crowd," specifically a compelled Kol Mikaelson, who has been posing as his friend. In this episode, Elena and Damon travel to
: Back in Mystic Falls, Stefan and Klaus are forced into an uneasy alliance to find the missing White Oak stakes. Meanwhile, Rebekah’s mother, Esther, returns with a plan that threatens the entire Original family. : Elena discovers that Jeremy has been hanging
If you are referring to a different series, here are other notable Season 3, Episode 19s:
: Titled " Hell Money ," written by Jeffrey Vlaming, focusing on a lethal "organ lottery" in San Francisco’s Chinatown.