"I Know Why the Caged Bird Kills" is the tenth episode in the second season of the American animated television program The Venture Bros. The episode introduces a new supervillain, Dr. Henry Killinger, as well as Myra Brandish (who may or may not be the mother of Hank and Dean Venture). During the episode, Myra kidnaps Hank and Dean in order to get them away from (what she perceives as) the negative lifestyle they live with their father, Doctor Thaddeus Venture. Dr. Venture and Doctor Byron Orpheus take a road trip to discover why Dr. Venture is haunted by an oni, and Dr. Killinger helps reunite The Monarch with his ex-girlfriend, Dr. Girlfriend.