After a criminology student is found murdered, the BAU team hunts for a suspect who is recreating the techniques used by famous serial killers from the past.
The first responders face a series of emergencies such as a warehouse robot gone rogue; Eddie's fight club becomes unruly; Hen confronts relationship woes.
An apartment building is damaged by a meteor shower and a hazardous waste truck crashes; Hen's guilt over the ambulance accident continues to weigh heavily.
The 118 deals with a series of incidents that happen during the holidays more times than others; Maddie tries to embrace the future by reflecting on her past.
Defendant instructs his attorney not to use the insanity plea, which upsets the brother of the accused since medical treatment could cure his criminal behavior.
After a 12-year-old quadriplegic dies at home in his bed, paramedics claim that he was suffocated, and the suspects include the boy's parents and sister.
In a small Texas town, Hotchner and his team examine a recent spree of murders, leading them to investigate a teenage serial killer and his girlfriend.
Taking a trip to Miami, Hotchner, Rossi and their team investigate a serial killer whose sexual identity may be an important factor in determining his motives.
A terrorist bombing in New York City takes out an SUV filled with members of the BAU, leaving the survivors to save their colleagues and track the perpetrators.