As the dust settles on their brave new world, the survivors are forced to face some cold truths. Catherine is stunned to discover the part she played in bringing about the alien attack. Helen becomes fixated on revenge. And Emily momentarily regains her sight. But is the miracle cause for celebration, or concern?

The survivors make some disarming discoveries not only about the aliens but also about themselves. Mokrani goes on the offensive, taking the fight to the aliens. Ash is forced to make the hardest decision of his life. And Chloe’s past catches up with her, threatening to rip apart the delicate semblance of normality she is so desperately clinging on to.

Cracks start to show as the survivors find different ways to cope. Jonathan’s increasingly perturbed by Sacha’s strange behaviour. Emily proves to be an exciting conundrum for Bill. And Mokrani is horrified as his men delight in the opportunity to exact revenge.

Threatened with expulsion, Yumyulack and Jesse continue to attend their empty high school after the school year ends. Unaware of the summer break, they believe they are being tested, and attempt to teach each other. They realize their mistake and wreak havoc on the school, and are bribed with straight As after discovering Principal Cooke and Mrs. Frankie having sex in the cafeteria. Korvo and Terry enroll in a junior college, but Terry shoots Korvo with a raygun that makes him dumber. Korvo joins Terry's hard-partying college experience, but accidentally causes the "ice lava" that powers their spaceship to flood the city, freezing everyone in its path.

Super villain M.O.D.O.K. runs his evil organization AIM into the ground and is forced to sell it to the tech company GRUMBL. As the megalomaniacal M.O.D.O.K. struggles to regain control of AIM, he risks losing something even more important…his family!

Cracks start to show as the survivors find different ways to cope. Jonathan’s increasingly perturbed by Sacha’s strange behaviour. Emily proves to be an exciting conundrum for Bill. And Mokrani is horrified as his men delight in the opportunity to exact revenge.

The alien’s connection to certain survivors raises difficult questions. Bill makes a startling discovery. Sacha’s behaviour is increasingly erratic. And Tom’s birthday proves cause for celebration. But at what cost?

A massive tornado sweeps through Austin, as Owen, Michelle and their teams races to save those in its path.

Owen and the crew race to a brawl at a male strip club, a fire at a bull semen factory and a protest where male toxicity is taken to a new level. Meanwhile, Paul tentatively goes out on a first date, Grace tries to reconnect with Judd and Owen faces the consequences of his chemo.

Against orders, Beckett travels to Los Angeles while investigating the murder of her training officer Michael Royce, last seen being arrested in the Under the Gun episode; Castle questions Beckett's motives.

Castle and Beckett are called to investigate when a contestant in a beauty pageant is found strangled and every suspect has a motive to commit murder.

Season 5 picks up on the proverbial morning after, with Castle and Beckett facing new questions -- Was this a one-time fling, or are they now a couple?

When a young woman is mysteriously murdered, Beckett and Castle discover her death may be linked to a repossessed storage unit up for auction.

The BAU searches for a motive and an UnSub when victims are found in truck stop restrooms along highways throughout the South.

Women are found dead inside their own homes throughout L.A. The BAU searches security footage for an UnSub who was invited into each victim's home.

When a reporter is found dead inside a pizza oven, Castle and Beckett try to determine why he was murdered. They hunt a trail of suspects working for franchises with very similar names.

Against orders, Beckett travels to Los Angeles while investigating the murder of her training officer Michael Royce, last seen being arrested in the Under the Gun episode; Castle questions Beckett's motives.

An assassin with knowledge of the details behind Beckett's mother's murder escapes from custody during his trial, leaving Castle and Beckett to track him down. A secret is revealed about Captain Montgomery's past and the identity of the third cop.

The team investigates a body found in a car crash, the remains of which belong to a founder of a men's rights organisation who may have been the victim of domestic abuse.

The Jeffersonian investigates the decomposing body of a social worker in the park, but evidence suggests the killer lived with the body for months before dumping it.

The Jeffersonian investigates the murder of a convicted felon who had been released to a halfway house, but disappeared, and a suspect in the case has ties to Booth. Meanwhile, Brennan testifies at an FBI hearing about the circumstances regarding her assault of an unarmed suspect from a previous case, and the outcome of the hearing could lead to her suspension and prevent her from working with the FBI. Aubrey and Jessica's (guest star Laura Spencer) first kiss is delayed again and Hodgins continues to push Angela away.

When an 18-year-old girl escapes from a suburban home where she was held captive for years with two other women, the BAU searches for the Unsub who kidnapped them.

When Morgan is abducted, the BAU scrambles to find him and save his life.

Harrow recovers from a near-fatal shooting and returns immediately to work, investigating the tragic puzzle of a young mother's psychotic episode while trying to figure out who shot him.

Harrow investigates the death of two base jumpers while Fern deals with the fallout of her arrest on serious drug allegations.

R.J. finds himself at the center of a suburban housewife murder mystery; Catherine worries that R.J. is getting too close to Emi.

Owen and the crew race to a brawl at a male strip club, a fire at a bull semen factory and a protest where male toxicity is taken to a new level. Meanwhile, Paul tentatively goes out on a first date, Grace tries to reconnect with Judd and Owen faces the consequences of his chemo.

During the trial of a murdered socialite, a juror falls dead from cyanide poisoning. Suspect number one is the defendant of the trial, having an accomplice poison the juror's coffee within the courthouse.

When a future Olympic swimmer is found dead in the pool, Castle and Beckett travel into the world of sports, drugs, and drug dealers.

Castle and Beckett are called to investigate when a contestant in a beauty pageant is found strangled and every suspect has a motive to commit murder.

The team investigates the body of a private investigator who was found frozen in ice, after being dumped in the Potomac. The victim, a man with many enemies, was a "fixer" who made sure his cllients' problems got "resolved." Meanwhile, Aubrey is shocked to find information tied to his father's whereabouts, Angela and Hodgins continue to work on their rocky relationship, Brennan and Booth get Christine's first report card and criminal behaviorist Karen Delfs (guest star Sara Rue) asks Aubrey out on a date.

The BAU heads to Wichita in search of an UnSub abducting children while their parents sleep. Also, Morgan tries to find who was responsible for his attack.

Emergencies include a ride-share trip gone awry, a farming accident and a memorial service that may turn into another funeral. Owen unexpectedly bonds with the former Captain of the 126, while Marjan and the crew help Mateo try to pass his written exams.

Castle and Beckett take on a murder at a sci-fi convention.

When an UnSub targets the BAU, and the team goes into action to find out who is responsible.