[s4e5] I Hear You Knocking · High-Quality

While the men battle their demons, Hayley Marshall uncovers chilling details about her own lineage through Mary.

Watch the official inside look for this episode to see the producers discuss the Hollow's psychological grip on Klaus and Marcel: [S4E5] I Hear You Knocking

" 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 While the men battle their demons, Hayley Marshall

: Freya risks her life to create a cure for the infection the Hollow placed on Klaus, solidifying her bond with Keelin as they work together to protect the family. Key Revelations working with a witch named Dominic.

: The final scene reveals that Sofya is actively conspiring against the Mikaelsons, working with a witch named Dominic.