Castiel gets a job at a Gas-N-Sip and actually starts to enjoy life as a human. A headline in the local newspaper about some disappearances in the area catches his eye, so he calls Dean to help him investigate the case. Dean knows he needs to keep Sam/Ezekiel away from Castiel, so he tells Sam that he and Kevin need to stay and work with Crowley to decipher the tablet. Crowley agrees to help Sam and Kevin but in return he wants one phone call to hell.

The episode was rated 7.94 from 1498 votes.

Dean struggles with the after effects of the Mark of Cain. Meanwhile, Sam hears about a case where straight-laced people are turning into violent murderers. Sam suspects possession and suggests to Dean that they investigate, but Dean tells him to go without him. While interviewing the local townsfolk, Sam meets an elderly woman named Julia, who tells him the Men of Letters came to town in 1958. Josie tells Sam the story of a young man named Henry Winchester and his female companion, Josie Sands. While Sam is away, Crowley tests Dean.

The episode was rated 7.97 from 1461 votes.

Dean gets a call from an old friend named Sonny asking for help with a ghost. Sonny runs a home for delinquent boys, and Dean was sent there for stealing food when he was younger. Sam is stunned he never knew this about his brother and asks for more information, but Dean dodges his questions. Another murder occurs while Sam and Dean are at the house, so they scramble to find the culprit before anyone else dies. Meanwhile, Dean looks up an old girlfriend and recalls his time at the house.

The episode was rated 8.00 from 1493 votes.

Dean shocks Sam by popping open the trunk of the Impala and showing him that he has kidnapped Crowley. Kevin freaks out when he sees the King of Hell, but Sam and Dean convince him that they need Crowley to find the demons on Earth. Meanwhile, Abaddon re-emerges and plans to take over Hell.

The episode was rated 8.00 from 1498 votes.

Dean is frustrated when he can’t reach Crowley, who has promised to find The First Blade. When Crowley finally calls Sam and Dean, he tells them he fell off the wagon and has been injecting human blood and needs their help. To make matters worse, he had a demon helping him find blood, but she sold him out and told Abaddon that he and the Winchesters were searching for The First Blade. The brothers need to find the blade before Abaddon does, so they enlist the help of a former member of the Men of Letters.

The episode was rated 8.00 from 1469 votes.

When the only witness to a couple of mysterious murders is a dog, Dean performs a risky spell to help him communicate with canines.

The episode was rated 8.03 from 1541 votes.

After a massive attack on the angels, Castiel calls Sam and Dean for help. As they leave, Dean’s eagerness to bring the First Blade doesn’t go unnoticed by Sam who is worried about the cost to his brother whenever he uses the Blade. Meanwhile, Castiel is shocked when he learns the angel that caused the attack was one of his followers and did it in his name. Dean discovers there is a conspiracy amongst Castiel’s angel followers and at the heart of it is Tessa, the Reaper.

The episode was rated 8.03 from 1478 votes.

Castiel captures one of Metatron’s angels and asks Sam and Dean for help with the interrogation. Dean eagerly accepts, which doesn’t go unnoticed by Sam. Meanwhile, Abaddon demands Crowley help her kill Sam and Dean. When he refuses, she reveals her shocking bargaining chip. Also, Castiel sets a meeting with Gadreel.

The episode was rated 8.10 from 1483 votes.

Dean is frantic after Sam collapses and the doctor tells Dean his brother won't make it. Desperate, Dean sends out an all points bulletin via prayer to every angel in the area, asking them to help his brother. In exchange, Dean will owe that angel a favor. Numerous angry angels race to find and kill Dean, but one, Ezekiel, gets to him first. Meanwhile, Sam fights for his life and must face some familiar demons to do so. Castiel struggles to survive without powers.

The episode was rated 8.10 from 1715 votes.

Ezekiel tells Dean a group of angels is hunting Castiel. Dean and Sam race to find their friend before the angels do. Meanwhile, a homeless Castiel is trying to make his way through the city and comes across some unexpected surprises.

The episode was rated 8.13 from 1506 votes.

Dean is devastated after Kevin's death and vows to find the angel that killed him, not only to free Sam, but to seek revenge. Castiel arrives at the bunker and suggests they try to separate Sam's brain from the angel's so they can talk to Sam and have him expel Gadreel. However, there's one small problem: the only person who knows how to do that is Crowley.

The episode was rated 8.21 from 1526 votes.

While investigating two bizarre murders, Sam and Dean realize there is an eyewitness to both gruesome deaths - a German Sheppard. Anxious to find out if they are dealing with a witch, a skinwalker or other supernatural monster, the guys look up a spell that could let Dean "communicate" with the dog. Unfortunately, the spell comes with side effects that no one saw coming.

The episode was rated 8.22 from 1591 votes.

After a massive angel slaughter occurs, Sam and Dean arrive at the scene to investigate and are surprised to run into Castiel. While investigating, Castiel is captured and tortured. Meanwhile, Dean questions Ezekiel's demands and wonders if it might be time to tell Sam the truth.

The episode was rated 8.29 from 1523 votes.

Looking to reclaim his place as King of Hell, Crowley asks Dean for help finding "The First Blade," the only blade that can kill Abbadon. Knowing he owes Crowley a favor for helping Sam, and also wanting Abaddon dead himself, Dean reluctantly agrees and the two set off on a road trip. However, Dean and Crowley are completely unprepared when they find out who has the blade - Cain, the first son. Meanwhile, Sam is back at the bunker with Castiel who notices there is some leftover grace inside Sam. If they can extract it, they can use the grace to track Gadreel. The only problem is the procedure may do permanent damage to Sam.

The episode was rated 8.36 from 1516 votes.

In the Supernatural episode "Do You Believe in Miracles?", Dean finds himself facing the consequences of wielding the powerful First Blade. As the effects of the blade take hold, Dean's transformation takes a shocking turn. Meanwhile, the notorious Metatron begins his move against humanity, setting the stage for an intense showdown.

Some viewers felt that this season finale didn't quite hit the mark. However, it did deliver a surprising twist as Dean succumbs to his inner demon, thanks to the mark. This unexpected turn added a new layer of complexity to the storyline, leaving fans eager to see what happens next. Additionally, Gadreel's journey tugged at the heartstrings, as he attempted to redeem himself in the face of overwhelming odds.

While opinions may vary, there's no denying that the finale left a lasting impact on many viewers. The jaw-dropping ending had fans buzzing with excitement and anticipation for what lies ahead. Supernatural once again proves its ability to deliver thrilling moments that keep audiences hooked.

The episode was rated 8.54 from 1649 votes.