Check out a batch promotional stills from last night’s episode of Supernatural, titled “Taxi Driver,” below.

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In the episode, Kevin figured out the second trial required to shut the gates of Hell permanently was to rescue an innocent soul from Hell and release it unto Heaven. After interrogating a crossroads demon, Sam and Dean met with a rogue reaper, Ajay. He informed them that Bobby’s soul was in Hell due to Crowley’s meddling, and so Sam set off to rescue him.

The path to Hell went through Purgatory, so when Crowley killed Ajay to prevent Sam from returning from Hell, Dean asked Benny for help. Benny allowed Dean to kill him in order to guide Sam to the portal that Dean used to escape. Sam intended to bring Benny back with him despite his previous reservations about the vampire. Benny, however, chose to remain behind.

Meanwhile, Naomi visited Dean and told him that she wanted to help the brothers seal the gates of Hell. When Crowley attempted to stop the Winchesters from releasing Bobby’s soul, Naomi stepped in and forced Crowley to flee. This allowed Bobby’s soul to ascend to Heaven, and Sam recited the incantation to complete the second trial.

The episode ended with Kevin appearing to be kidnapped by Crowley, whose voice he had been hearing in his head. The kidnapping was made to look like a runaway, which left the Winchesters without a clue as to where he might be.

Supernatural is currently on a three week hiatus. It will return with new episodes on April 24 and air its remaining four episodes in a row. The season finale will air on Wednesday, May 15.