[s12e21] There's Something About Mary [UPDATED]

Crowley’s attempt to keep Lucifer under his control fails. Lucifer manages to reverse the security system in his vessel, overpowering Crowley and escaping his confinement.

The episode is often discussed by fans for its dark tone and the controversial writing style of Buckner and Ross-Leming, who frequently handle episodes involving significant character deaths or major plot shifts. You can find community discussions and breakdowns on the Supernatural Reddit or browse fan-cataloged details on Archive of Our Own. [S12E21] There's Something About Mary

Lady Toni Bevell returns to the U.S. to oversee Mary's conditioning, leading to a tense face-off between her and Mary. Production Credits Director: P.J. Pesce Writers: Brad Buckner & Eugenie Ross-Leming Crowley’s attempt to keep Lucifer under his control fails