On this episode of Supernatural...

Mick has flashbacks of his time at Kendricks when he had to kill a schoolmate to survive.

Eileen lets Sam and Dean know the whereabouts of Kelly.

Lucifer pretends to submit to Crowley. He wants to get the cage architect to free his bonds.

Dagon tells Kelly she will die.

Sam and Dean get Kelly, but Dagon gets her back.

Eileen accidentally shoots a Men of Letters. Mick doesn't follow the code and kill her.

Mr. Ketch sleeps with Mary.

Sam and Dean keep the Colt.

Eileen returns to Ireland.

Mick's former teacher and higher up in the Men of Letters tells Mick he failed and that Sam and Dean will be dealt with.

Mr. Ketch kills Mick.