The FBI races to find the kidnapped daughter of a senator who is being held for ransom, and they must uncover the senator's past to unravel who did this.
Team Scorpion sets out on what a seemingly easy job, but the mission goes sideways as Happy, Sylvester and Cabe begin to suffer life-threatening hallucination.
Happy and Team Scorpion work to save Happy's friend who lives in a sterile bubble due to her compromised immune system after a storm threatens her bubble.
In order to halt the proliferation of a deadly virus, Team Scorpion heads into the Amazon to find a monkey that holds within its body the cure for the virus.
Team Scorpion sets out to retrieve a pair of scientists inside a deteriorating biological research station, but they soon find themselves trapped inside.
The BAU team launches an investigation to help Dr. Tara Lewis after a man who claims to be her brother turns up with knowledge about both her and her family.
The BAU travels to Yakima, Wash., to investigate following the discovery of 12 people's remains along a river bed; veteran profiler Stephen Walker transfers.
When some upper-class neighborhoods start to experience as series of robberies and murders, the BAU team is tasked with figuring out the cause of the invasions.
A strange hieroglyph found under a deceased homeless man's armpit connects back to casualties from years earlier; Reid takes his mom out of the clinical study.
The BAU team has difficulty identifying multiple victims when the team brought in to help catch a killer who is responsible for decapitating several men.
Pride and the NCIS team are forced to conduct a manhunt that covers the entire city for a particularly trained and highly credentialed special ops Marine.
Tammy's ex-husband returns to New Orleans after a disappearance following his embezzlement scandal only to become connected to the killing of a crime boss' son.
A judge sentences a man to life in prison before she and her daughter are murdered; Dana's shared history with the victim makes her interested in the case.
An alt-right supporter is killed after a speech they gave at a university located in New York City, which forces Maggie and OA to rely on OA's sister for help.
Maggie and OA are determined to locate a missing couple who have committed a recent spree of violent armed robberies that ended in an off-duty officer's death.
The suspect in the case of a murdered journalist is linked to other previous cases; the victim's death mirrors a traumatic event Maggie experienced in her past.
Maggie and OA search for a serial bomber who targets elite Wall Street members while Dana deals with an arrogant profiler who is consulting on the case.