The CBI pursues two lines of investigation when a Santa is murdered. Meanwhile, following the demise of a person in custody at the CBI, J.J. LaRoche is brought in to question the team when it appears to be an inside job.

Alec and his team come face to face with the man who was put away for the church bombing 20 years earlier. Marisa and Kylie work together to save Alec, Phoebe and Rizwan. Jace makes a critical break in the case that changes everything.

At George Wagner’s trial, stunning testimony exposes secrets that send shockwaves throughout the close-knit community. A jaw-dropping motive that caused a family of eight to be murdered in four locations in one night is revealed.

Alec and his team come face to face with the man who was put away for the church bombing 20 years earlier. Marisa and Kylie work together to save Alec, Phoebe and Rizwan. Jace makes a critical break in the case that changes everything.

At George Wagner’s trial, stunning testimony exposes secrets that send shockwaves throughout the close-knit community. A jaw-dropping motive that caused a family of eight to be murdered in four locations in one night is revealed.

Under investigation by an old rival, the team struggles to defend itself. Meanwhile, a tattoo leads them to a mysterious death at a foster home.

The CBI pursues two lines of investigation when a Santa is murdered. Meanwhile, following the demise of a person in custody at the CBI, J.J. LaRoche is brought in to question the team when it appears to be an inside job.

Alec and his team come face to face with the man who was put away for the church bombing 20 years earlier. Marisa and Kylie work together to save Alec, Phoebe and Rizwan. Jace makes a critical break in the case that changes everything.

A memorial hike in Emery Mountain Park turns tragic and Alberg's investigation uncovers a twisting story of betrayal, grief, and revenge.

The CBI pursues two lines of investigation when a Santa is murdered. Meanwhile, following the demise of a person in custody at the CBI, J.J. LaRoche is brought in to question the team when it appears to be an inside job.

DDA Hobbs gets involved in a case concerning the suspicious death of a customs agent.

In a case that hits a little too close to home for Rusty, a 19-year-old prostitute is brutally murdered. The squad rushes to reach a deal with the remorseless killer they believe is part of a larger criminal enterprise.

Alec and Marisa are close to finding the culprit of the church bombing; Kylie gets an interview with the FBI, but is pulled into the investigation; Rose tracks down a witness; Phoebe and Rizwan make a discovery that sheds light on the truth.

While Jane and Weller go undercover on a high-stakes scavenger hunt run by powerful hackers, Shepherd journeys to Thailand to procure a dangerous weapon.

A new face at Firehouse 51 causes tension, while rising chaos in the city brings new challenges to the team.