[s4e5] I Hear You Knocking Online

: Though the intended sacrifice failed, the Hollow accepts Marcel’s blood and grants his allies a magical thorn capable of killing an Original.

" I Hear You Knocking " is the fifth episode of the fourth season of the CW series , which originally aired on April 14, 2017. This pivotal hour serves as a psychological deep dive into the show's two most complex power players, Klaus Mikaelson and Marcel Gerard, as they are forced onto a violent collision course by a malevolent entity known as The Hollow . Psychological Warfare: The Hollow’s Manipulation [S4E5] I Hear You Knocking

: The two are drawn to an abandoned house where they are intended to kill each other, providing a massive sacrifice of power for the Hollow. Ultimately, Klaus spares Marcel, knocking him unconscious instead—a major moment signaling his ongoing redemption arc. Ancestral Secrets & The Werewolf Link : Though the intended sacrifice failed, the Hollow

: A link is revealed between the Hollow's dark magic and Hayley's former wolf pack, suggesting that the ancient evil has been targeting her bloodline for generations. Emerging Dynamics: Freya and Keelin Psychological Warfare: The Hollow’s Manipulation : The two

Watch the official inside look for this episode to see the producers discuss the Hollow's psychological grip on Klaus and Marcel: