[s6e21] Let It Bleed -

Betrays Castiel's plans to help the brothers find Crowley’s warehouse.

Faces increasing tension with the Winchesters; heals Lisa but captures Eleanor. Lisa Braeden [S6E21] Let It Bleed

Critics and fans often highlight this episode as one of the season’s most emotional hours. The performance by was widely praised for conveying Dean's absolute heartbreak during the memory-wipe scene. While some viewers felt the H.P. Lovecraft subplot was less engaging than the personal stakes of the abduction, the episode is generally regarded as a powerful setup for the season finale. Betrays Castiel's plans to help the brothers find

Dean and Sam enlist the help of Balthazar , who has become disillusioned with Castiel’s secret alliance with Crowley. He leads them to an angel-proofed warehouse where the pair is being held. The performance by was widely praised for conveying

The primary conflict is driven by , who kidnaps Dean’s former girlfriend, Lisa Braeden , and her son, Ben , to force the Winchesters to stop their pursuit of Purgatory.