At the Observatory, Mokrani and Catherine clash over the fate to be reserved for Micah, whom Catherine considers to be a major source of information. Micah reveals to Catherine that she has to find Bill Ward. The latter, for his part, tries to find out more about Emily, still assailed by visions of Adina, the leader of the aliens urging him to kill Bill.

Without telling Emily or her parents anything, Bill decides with Zoe to test on Emily the biological weapon he hopes to be able to use against the aliens. Catherine, for her part, has had difficulty managing her grief since Mokrani's death. She now has only one thing on her mind: to find out who Bill Ward is and find him. Sophia is ready to help him, but Nathan hesitates.

Catherine, Sophia and Nathan make their way to London, accompanied by Victor, a survivor encountered by chance. Along the way, the dangers multiply. Sacha's feelings towards Emily intensify and the young man's behavior becomes more and more disturbing. Feeling threatened, Bill is forced to flee.

Oops! The wild story that explains why Terry had to order a new shot glass.

Finally! It's season finale time again! The Solars learn about death!

Without telling Emily or her parents anything, Bill decides with Zoe to test on Emily the biological weapon he hopes to be able to use against the aliens. Catherine, for her part, has had difficulty managing her grief since Mokrani's death. She now has only one thing on her mind: to find out who Bill Ward is and find him. Sophia is ready to help him, but Nathan hesitates.

Catherine, Sophia and Nathan make their way to London, accompanied by Victor, a survivor encountered by chance. Along the way, the dangers multiply. Sacha's feelings towards Emily intensify and the young man's behavior becomes more and more disturbing. Feeling threatened, Bill is forced to flee.

As Buck’s life hangs in the balance, he dreams of a world where he never became a firefighter, for better and worse.

Ryan Murphy, Brad Falchuk and Tim Minear reimagine the procedural drama with "9-1-1." The series explores the high-pressure experiences of first responders -- including police officers, firefighters and dispatchers -- who are thrust into the most frightening, shocking and heart-stopping situations. These emergency responders must try to balance saving those who are at their most vulnerable with solving the problems in their own lives. The show draws from real-life, high-pressure experiences of first responders who regularly face heart-stopping situations that are often unpredictable, intense and uplifting at the same time.

The 118 race to the rescues with emergencies at a spin class; in a hair salon and to a husband and wife in a compromising position; Buck discovers new cognitive abilities post lightning strike; Hen and Karen are concerned when they find out Denny has been seeing his biological father behind their backs; Maddie and Chimney enlist Athena and Bobby’s help with a suspicious neighbor.

When Castle and Beckett discover that the victim of a building fire was actually shot to death, they get on the trail of a serial arsonist turned murderer.

The murder of a young video store clerk takes a strange turn when the team discovers his past history as a high-level hacker. But it's nothing compared to the shock Castle receives when their investigation leads them straight to his father.

Beckett is recruited to assist on a Narcotics investigation, but a routine mission turns deadly when an undercover operation goes awry. To survive, Beckett must engage in a battle of wits against some of the most dangerous men in the New York underworld.

When successful businessmen in Detroit are targeted by an anger-driven power-assertive Unsub, the BAU is called in to investigate.

When Garcia experiences anxiety over a case that's personal to her from her past, Morgan visits to lend emotional support.

When an UnSub in Miami sensationalizes his crimes by giving the local media exclusive footage, the BAU is called in to investigate.

When a guilt-ridden young woman confesses to the murder of a struggling actor - knowing details only the killer could know - Beckett and Castle seem to have an open-and-shut case, until they uncover proof that their suspect couldn't possibly be the killer.

When a Japanese ballet dancer is mysteriously murdered, Castle and Beckett's investigation into her secret life uncovers evidence that she was killed by a ninja, and now that ninja is coming after them.

A BMX rider's remains are discovered on the roof of a warehouse after a failed bike stunt. Sweets turns to Booth for advice about his relationship with Daisy and Booth makes a decision about his relationship with Hannah.

The liquefied remains of a wedding planner are found in her home tanning bed on Valentine's Day, and Cam pressures her team to solve the case in time so she can celebrate the holiday with her boyfriend.

The BAU investigates a workplace shooting committed by a state-of-the-art drone in Silicon Valley.

The BAU searches for an unsub in Austin, Texas who is targeting prominent members of the community.

When two members of a conspiracy group in Roswell, New Mexico perish in quick succession, the BAU is called to investigate.

While Harrow investigates a baffling crime involving siblings, James brings danger closer to his half-sister Fern than ever before - and pays a high price.

Harrow rides the storm when a deathly ill boy at QIFM needs his help at the very moment Mila Zoric summons him to negotiate his kidnapped son's release. But there's one lightning bolt shock he did not see coming.

A BMX rider's remains are discovered on the roof of a warehouse after a failed bike stunt. Sweets turns to Booth for advice about his relationship with Daisy and Booth makes a decision about his relationship with Hannah.

The liquefied remains of a wedding planner are found in her home tanning bed on Valentine's Day, and Cam pressures her team to solve the case in time so she can celebrate the holiday with her boyfriend.

When a model is murdered, Will and Faith dive into a twisted art-world conspiracy, aided by Ava, his former flame; Betty's instincts turn a routine neighborhood check for Ormewood, Angie and Nico into a critical lead on a dangerous case.

Colter is tasked with tracking down a “ghost” when hired to find a man who seemingly died in a car accident months earlier. Meanwhile, Colter catches a break in his white whale case.

While Harrow investigates a baffling crime involving siblings, James brings danger closer to his half-sister Fern than ever before - and pays a high price.

When a murder investigation reveals there's more to the story than meets the eye, Special Agent Will Trent relies on his keen instincts and unique experience to uncover the truth.

As the GBI continues its investigation on a missing girl, Will becomes frustrated with the suspect search; Angie is forced to evaluate her current relationships as she follows a new case with Ormewood.

Will and Faith's investigation into a small-town murder has large implications when a connection is drawn to a cold case; the death of a security guard perplexes Angie.