Supernatural, The Thing

Season 13 begins with Sam and Dean picking up the pieces after the loss of their mother, the demise of Crowley and the heartbreaking death of Castiel.

Sam and Dean explore Jack's powers, but a visit from Donatello makes them realise that Jack will need more protection than they can provide. There is a new Prince of Hell in town, Asmodeus, and he sets his sights on Jack.

Missouri's friend is murdered by a wraith with a taste for psychics, so she enlists the help of Dean and Jody to protect her granddaughter, Patience, who has no idea she shares her grandmother's trait .

When multiple patients of grief counselor Mia Vallens turn up dead, Sam, Dean and Jack investigate the mystery surrounding the murders and, each inadvertently, are forced to deal with unresolved grief of their own.

Sam and Dean investigate a case involving the ghost of a demented doctor and get assistance from Billie. Castiel finds his way back to the Winchesters.

Castiel is reunited with Jack and, together with Sam and Dean, they head to a sleepy old western town to investigate a murder. Dean gets to live out his boyhood fantasy when he comes face to face with a famous, gun-slinging outlaw.

Sam and Dean encounter a familiar foe when they continue their search for Jack, with Asmodeus hot on their trail. Lucifer escapes Michael's grasp and finds himself unlikely and mostly willing ally.

Sam and Dean agree to steal a mysterious trunk belonging to a demon named Barthamus in exchange for a locater spell the Winchesters can use to track down Jack.

Jack enlists the help of a dreamwalker named Kaia to help him find Mary Winchester and save her from the alternate universe. When plans go awry, the Winchester brothers are the ones who need saving.

When Sam and Dean go missing, Jody Mills calls Claire Novak to help find the Winchesters. Claire returns and reunites with Alex Jones, who has stayed behind with Jody and tries to balance a 'normal' life with being a part time hunter.

Donna calls Sam and Dean for help after her niece, Wendy, goes missing. The three hunters discover Wendy was kidnapped by a man who sells human parts to monsters in a grotesque online auction and race to save her before it is too late.

Dean falls victim to a couple of witches, sisters Jamie and Jennie Plum, who manage to steal a powerful book of spells from the Winchester brothers. When Sam and Dean go after the book, they get help from Rowena, who is back from the dead.

Sam, Dean and Castiel search for Lucifer who, meanwhile, strikes an unlikely deal with a local faith healer named Sister Jo. Asmodeus inches closer to finding Jack.

Jack and Mary manage to escape Michael's clutches and end up finding an ally. Sam, Dean and Castiel continue to search for a way to open a breach, not realising that one of their own may be working against them.

Sam and Dean are close to opening a rift into the apocalyptic world and possibly rescuing Mary and Jack. The one missing ingredient leads the Winchesters to a black market for religious relics where everything is not always as it seems.

Sam, Dean and Castiel are transported into the animated world of Scooby Doo; and they join forces with the Scooby gang to solve a ghostly mystery.

Sam and Dean continue to collect the pieces necessary to open a rift to the other world in order to save their family. Their latest quest leads them to a Men of Letters bunker from the 1920's and a hungry god from another dimension.

Lucifer rules over heaven but things aren't going exactly as planned, exasperating his first lady, Jo. Sam and Castiel are perplexed by the return of Gabriel. Dean gets one step closer to finding Mary and Jack.

Sam and Dean must stop Rowena, who is on a deadly mission. Castiel looks to heaven to recruit angels for an impending invasion but is shocked by not only what he finds, but who.

Gabriel is back and drags Sam and Dean into his plot for revenge on the demigods who sold him to Asmodeus. Jack's inflating confidence leads to reckless decisions that could put others in harm's way.

Sam, Dean, Castiel, and Gabriel must work together if they have any hope of bringing Mary and Jack home. Rowena's encounter with Lucifer may alter the outcome of the journey for one of the heroes.

Sam and Dean devise a plan that will save innocent lives. Jack continues to wrestle with the consequences of his decisions.

The Season 13 finale: Sam and Dean continue to be tested in the battle between good and evil, but one impulse decision could alter the lives of one of the brothers forever.