After failing a military training mission, the team members are determined to prove themselves when an Internet infrastructure is threatened by a bomber.

After a bad date, Koothrappali decides to never leave his apartment; Penny’s acting skills impress Sheldon.

Agent Mack and his brother step in when a radical group called the Watchdogs plan to eliminate the Inhumans; Simmons finds a powerful chemical compound.

Nyssa believes that Malcolm killed Sara and goes after him to avenger her lover’s murder. Oliver discovers that he has no choice but to stop her, despite Laurel insisting that…

Ambushed by angry hunters, Sam and Dean are shot and killed and sent to Heaven. Castiel warns Dean that Zachariah is looking for them in Heaven so they need to…

The guys search for a perfect Valentine’s Day gift for their significant others; Stuart and Raj host a “lonely people” party at the comic book store.

Marcia reveals O.J. has been charged; Robert Shapiro seeks advice from F. Lee Bailey, creates a provocative strategy, and tries to convince O.J. to hire Johnnie Cochran.

Oliver tries to track down Thea in Corto Maltese as Diggle searches for a missing field operative. Meanwhile, Felicity adapts to her new job.

Sam and Dean investigate Bobby’s home town where the dead are rising from the grave but instead of attacking humans, they are happily reuniting with their families. The brothers turn…

The governor calls on Team Scorpion when his daughter is mysteriously “bio-hacked” with a deadly virus and only has 24 hours to live. The case takes on a deeper significance…

Holden and Miller butt heads about how the raid was handled.

A fight between Sheldon and Leonard impacts Amy and Penny’s living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.

At the Red Keep, Tyrion plots three alliances through the promise of marriage. Catelyn arrives in the Stormlands to forge an alliance of her own, but King Renly, his new…

A mysterious archer known as Komodo appears in town and begins skewering businessmen. Meanwhile, Oliver worries about Thea, which forces Roy to tell him the truth about why she left…

Quentin faces his most formidable foe yet; Julia helps Alice with a dangerous endeavor.

Landry and Gawain meet a mysterious woman who claims she can lead them to the Grail; Joan hears of an attack on Navarre; De Nogaret devises a way to improve…

Castiel helps Sam and Dean hunt down Cupid on Valentine’s Day after townspeople start to kill each other for love. However, after Cupid tells them he’s innocent, they discover Famine,…

With crime at an all time low, Oliver decides to take a break and asks Felicity on a date. However, they’re interrupted when a new drug dealer take the name…

Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.

The angels send Anna back in time to kill John and Mary Winchester before they can conceive Sam knowing that if Sam was never born then Lucifer won’t be able…

When a crisis at LAX prevents dozens of airplanes from landing, the government brings in a group of misfit geniuses to sort things out.

As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.

Bobbi and Lance follow Gideon to Russia, and discover that he and a secret Inhuman are planning a coup. To stop them, the couple must make the ultimate sacrifice for…

Our Heroes are forced to rely on the help of Shallow Valley’s dangerous new inhabitants in order to save some of their own, with surprising results.

Gary, a teenage nerd, conjures up a body-switching spell and changes bodies with Sam. Thrilled by his new handsome and built body, Gary (now Sam) investigates a case with Dean…

When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Wolowitz in trouble.

A former hunter named Martin, who is currently institutionalized, calls Sam and Dean for help investigating a case in the mental hospital. The brothers get themselves admitted as patients to…

During a game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Koothrappali.

Sam, Dean and Castiel track down the Colt and head off to find Lucifer to send him back to Hell. It’s a hunters’ reunion when the crew joins forces with…

When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.

After the numerous sacrifices the team has made since the beginning of this ride, Rip decides that it’s time they each decide their own destiny and returns them to Central…

Super fan Becky uses Chuck’s phone to trick Sam and Dean into attending a Supernatural fan convention, complete with fans dressed up as Sam and Dean. One of the activities…

When the University reassigns Sheldon’s parking spot to Wolowitz, their fight affects the whole gang.

O.J. Simpson goes missing in the white Bronco and Robert Shapiro and Robert Kardashian battle the fallout while the D.A.’s office and the LAPD go searching for O.J.

Coulson and General Talbot suspect Malick of having an inside man at the worldwide symposium on Inhumans and the team discover the presence of a traitor.

Skinner goes AWOL when his past comes back to haunt him. As Mulder and Scully try to track him down, their growing mistrust of him reaches its apex.

Being in the vicinity of the Time Masters leaves Rip and Rory incredibly disturbed for very different reasons. Meanwhile, Sara takes over the Waverider, Kendra is reunited with Carter and…

When Sam and Dean find themselves living their lives on what appear to be TV shows, it makes for a whole new style of reality television and they wonder if…

With the help of Fred Johnson and the OPA, Miller, Holden and the crew stage a raid for information on the protomolecule. On Earth, Avasarala learns a truth about Fred…

Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard’s relationship.