At the university, Sophia watches the videos recorded by Dylan, a young man they found dead, while Catherine focuses on the algorithms he left behind and which decipher the behavior of robots. Thanks to Bill's intervention, Isla manages to flee and join her family.

Emily agrees to help Bill test her for the virus, but soon experiences serious side effects. Sacha, who has secretly followed the group to stay close to Emily, tries to remove her from the group. For their part, Catherine, Sophia and Nathan set out again in search of Bill Ward.

Catherine, Sophia, Zoe and the other survivors, finally reunited, prepare for the ultimate attack. But it is Bill who is the only one to hold the destiny of humanity in his hands, provided he is helped by Isla.

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.

Emily agrees to help Bill test her for the virus, but soon experiences serious side effects. Sacha, who has secretly followed the group to stay close to Emily, tries to remove her from the group. For their part, Catherine, Sophia and Nathan set out again in search of Bill Ward.

Catherine, Sophia, Zoe and the other survivors, finally reunited, prepare for the ultimate attack. But it is Bill who is the only one to hold the destiny of humanity in his hands, provided he is helped by Isla.

Joins the BAU team, which is tasked with capturing a killer who escaped prison with 13 other convicts at the end of last season.

When an up and coming DJ is killed at a pop star's album release party, Beckett and Castle must dive into the raucous world of New York's music industry.

When JJ arrives home shaken after a rough case, she breaks down and tells her husband about the abduction of two children.

Castle and Beckett enter the world of adult entertainment when the founder of college girls gone crazy is murdered.

Colter takes a job locating a missing teen with a unique spiritual gift in an inhospitable mining town

Owen and the 126 crew race to a gender reveal party gone horribly wrong, and a father/son trapped in a cave during a spelunking excursion. Meanwhile, Owen helps T.K. reconcile the past to help his future, Judd and Grace aid Judd's aging father and Michelle learns the full truth about her missing sister, Iris.

With Cam's reputation and career on the line, the team travels from overseas to help her solve the case of an unidentified young boy; the Forensics Anthropology Unit lost much of its vigor after disbanding to pursue personal ventures, and it will take the collaborative energy and knowledge of the newly reunited team to unravel evidence, and find closure for the family of the unknown boy.

Joins the BAU team, which is tasked with capturing a killer who escaped prison with 13 other convicts at the end of last season.

When JJ arrives home shaken after a rough case, she breaks down and tells her husband about the abduction of two children.

As Harrow and Grace investigate the death of a popular health and wellness vlogger, Harrow agitates for the exhumation of Chester's remains.

Colter takes a job locating a missing teen with a unique spiritual gift in an inhospitable mining town

While investigating the murder of a young woman, Castle and Beckett find evidence that links her death with Senator William H. Bracken, the man responsible for Beckett's mother's murder.

When the remains of a couple are discovered in a cave at National Park, the team must piece together the identity of the man and the woman as well as solve the crime; and Booth's girlfriend and Afghanistan-war correspondent Hannah Burley makes a surprise visit, causing Brennan to re-evaluate her own relationship with Booth.

Castle & Beckett get an up-close-and-personal view of a 'Real Housewives'-esque reality TV series, 'The Wives of Wall Street', when they investigate the murder of the show's rising young star.

Owen helps T.K. reconcile the past to help his future; Judd and Grace aid Judd's aging father; Michelle learns the full truth about her missing sister, Iris.

The BAU welcomes back Emily Prentiss as they are called upon to investigate the disappearance of three women.

The BAU team searches for a serial killer along the Appalachian Trail in rural Virginia.

While Grace autopsies the body of an elderly man discovered in an Egyptian sarcophagus, Harrow finds himself in a battle for his own life.

Castle and Beckett enter the world of adult entertainment when the founder of college girls gone crazy is murdered.

Castle & Beckett get an up-close-and-personal view of a 'Real Housewives'-esque reality TV series, 'The Wives of Wall Street', when they investigate the murder of the show's rising young star.

While investigating the murder of a young woman, Castle and Beckett find evidence that links her death with Senator William H. Bracken, the man responsible for Beckett's mother's murder.

While Grace autopsies the body of an elderly man discovered in an Egyptian sarcophagus, Harrow finds himself in a battle for his own life.

Harrow resolves to believe that Chester really is dead, and takes a case in North Queensland, while Simon launches his own investigation into Chester.

Coping with a death that strikes close to home by focusing on work, Harrow is stunned to discover a connection between this death and another deceased man on his autopsy table.

A drunk college student discovers the dead body of a Secret Service agent just before a presidential visit to the area. Booth is ready to hit the ground running and turns to Secret Service agent and former colleague Brandt Walker for information, but is surprised to learn the Secret Service has reservations about Booth's involvement in the case. The team uncovers some shocking evidence that heightens the seriousness of the case, causing Booth to step up for his country. Meanwhile, Brennan is out sick with the flu and former intern Dr. Colin Fisher returns to the Jeffersonian to run lead on the case, but Brennan refuses to be kept out of the loop. Also, Hodgins takes his life into his own hands and turns a corner after a potentially dangerous experiment.