The episode was directed by and features the standard ensemble cast, including: Iain Armitage as Sheldon Cooper Zoe Perry as Mary Cooper Lance Barber as George Cooper Sr. Annie Potts as Connie "Meemaw" Tucker Raegan Revord as Missy Cooper Craig T. Nelson as Dale Ballard Technical Specs for "720p WEB-DL"

Young Sheldon Season 4, Episode 14 is titled “A Parasite and a Butterfly’s Egg” . It originally aired on April 8, 2021. In this episode, Sheldon faces a moral dilemma after a medical examination, while Missy begins to question her own identity, and Mary deals with church gossip.

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