Changes

After arriving at the warehouse, Dean heads inside with the antidote for thallium, while Sam waits in the car with Nick. Meanwhile, Jack examines the syringe Nick used on Donatello and senses that it was recently filled with angelic [[grace]]. While Mary calls Sam to explain what Jack found, Nick takes out a lock pick hidden beneath his skin. After Sam drags Nick out of the car, who he explains that he injected Donatello with grace in order to contact Lucifer in [[the Empty]] and learn how to bring him back. Nick also explains that he was able to keep himself hidden and acquire the grace because of a group of demons who want Lucifer back as well. Nick removes his handcuffs and attacks Sam while the demons attack Dean in the warehouse. After a drawn -out fight, Nick strikes Sam's head repeatedly with a rock. Sam manages to honk the horn to alert Dean, but he starts succumbing to the head wound while Nick escapes.

Nick steals a passing driver's truck and heads to a nearby abandoned cabin where he begins a ritual to bring Lucifer back using Jack's blood, which was smeared on his shirt when he headbutted him, and mixes it mixed with his own blood. Nick burns the contents of the bowl in a salt ring and manages to summon Lucifer from the Empty. A fanatical Nick looks at the dead archangel in awe as he grants him permission to possess him again. However, casting the spell alerts Jack of Nick's location. Jack teleports himself and Mary to the cabin where he banishes Lucifer back to the Empty and closes the portal before he could possess Nick again. Jack, who having had enough of Nick's tricks, uses his powers to break the bones in his hand to torture him. Jack slowly burns Nick from the inside out, despite Mary's protests, prolonging his agony before he finally falls to the ground dead.