The Winchesters decide to take a road trip to get out of the bunker, but find themselves in a life-or-death struggle with creatures intent on raising an army to fight the Darkness.
While Dean hunts down Charlie's killers, Sam has no choice but to fulfill his end of his bargain with Rowena.
An earthquake leaves Maggie trapped in an elevator and threatens Meredith's streak of successful surgeries; Owen gives medical advice over the phone.
Hired to look into possible infidelity, Castle unexpectedly witnesses the murder of his client by her husband, but there's no proof the killing took place. Castle and Beckett look for the answers to expose the truth.moreless
John returns to Ivy University to help one of the Newcastle crew, Ritchie. Ritchie's TA has performed a ritual that has given a killer from another reality access to four of Ritchie's students... and the killer is picking them off one by one.moreless
Crowley discovers that Dean is becoming increasingly difficult to control, and contacts Sam to make a deal. Meanwhile, Sam escapes from Cole and returns to his hunt for his brother, and Hannah tries to make a deal with Metatron to save Castiel's life.moreless
Dean falls increasingly under the spell of the First Blade. Meanwhile, Metatron makes his move against humanity, as Sam, Castiel, and Gadreel try to stop him.
Castle and Beckett delve in the world of extreme sports after a professional skateboarder is gunned down.
Metatron tries to get Castiel to join forces with him. Meanwhile, Sam and Dean capture Gadreel.
When DiNozzo confronts a man impersonating a Navy officer, guns are drawn and the perpetrator is left dead. The subsequent investigation uncovers that the only eyewitness is DiNozzo's father, who is in town to disclose a secret to his son.moreless
The murder investigation of a video store clerk, who's also a high level hacker, leads Beckett and Castle straight to the mysterious Jackson Hunt.
Sam and Dean investigate an angel slaughter and discover that Castiel is already looking into the matter. The individual responsible captures Castiel, while Dean wonders whether ti's time to tell Sam the truth about Ezekiel.moreless
NCIS and the CGIS head out to sea to investigate a suspicious explosion on board an oil rig.
Beckett continues her quest to find the stolen toxin as Castle is left with less than a day to live after his exposure.
Sam, Dean and Castiel are reunited and search the files of the Men of the Letters to find a film that could help them figure out the third trial. Meanwhile, Metatron asks for Castiel's advice about the problems in Heaven, and Crowley delves into the brothers' past... and some familiar facesmoreless
A massive storm brings the NCIS team aboard the USS Borealis, where everyone becomes a suspect once the crime scene proves that Mother Nature wasn't the only culprit. Tension builds when McGee discovers that his estranged father, Navy Admiral John McGee, was on board during the incident.moreless
Castiel returns and asks Sam and Dean to help him against demons seeking Lucifer's Crypt. When they set out to take on the demons, they rescue Meg, who is being interrogated for information. While Dean and Castiel go to find the Crypt, Sam and Meg fight a rearguard action to hold Crowley off.moreless
Complications ensue when Castle and Beckett finally try to take Senator Bracken down after finding evidence connecting him to a young woman's murder.
Gibbs continues to work with a Marine Captain sufferingfrom PTSD in an investigation to track down a terrorist.
The Winchesters track down a killer and the investigation leads them to found footage of three college students investigating mysterious animal attacks.
Following a leak of classified information, the Secretary of the Navy partners NCIS with PsyOps to solve the mysterious case.
Sam and Dean return to follow up on an old case, the exorcism of a demon from a postal worker, when they discover that the demon has returned and is killing women, just like it did four years ago.moreless
A popular reality TV star is the key to an investigation involving the death of a world-renowned dog whisperer. A famous therapist is contacted after the team discovers that one of her clients was a witness to the murder.moreless
The NCIS team investigates the death of a Navy lieutenant that died of over-hydration, which soon turns into a murder investigation. Meanwhile, Gibbs meets Ducky's new lady.
Castle and Beckett investigate the murder of the lead detective on Beckett's mother's homicide case.