The Best Episodes Written By Christopher Barbour

Catherine's friend Laura's mogul husband Mark has a lot to hide behind his successful international corporation, and he's hired a crack team of assassins to carry out the murders of anyone who might be aware of what he's doing, and that includes Laura's lawyer and Laura herself.

Boston is at the mercy of a blizzard and the morgue staff at the mercy of an unknown toxin. With bodies piling up, and the lights out, the race is on stop this invisible killer before too many more die.

With Rossi in Voit’s clutches, he grapples with the limits of his technical know-how and mental strength. As the BAU tightens their grip on Voit, he reveals just how far he’s willing to take his deadly crusade.

The world of illegal dog fighting is explored by Grissom and the rest of the team when they take on the case of a wealthy socialite who was murdered. Meanwhile, Warrick struggles to clear his name in the recent exotic dancer murder case.

Sara clashes with her mother-in-law and a woman from Gil's past.

Season finale: The investigation of a triple homicide leads to the discovery of corruption running rampant throughout the LVPD. The closer they get to the truth, the more serious are the repercussions. To be continued...

The BAU team investigates an UnSub with striking similarities to Rossi’s latest obsession, “The Chameleon,” a.k.a. Everett Lynch, who nearly killed him and then disappeared.

It has been a year since Rossi nearly died at the hands of Everett Lynch, a.k.a. “The Chameleon,” and he has developed some new theories, with inspiration from his former partner, Jason Gideon. The BAU team sets out on an epic hunt to capture Lynch.

The CSI team investigate a murder at the home of Marta, a "level 5 hoarder" whose home is stacked high with possessions and garbage--and more than one dead body

With Jade on the run, the BAU continues to assemble the pieces connecting Gold Star victims to Aida Limited. Jade and Dana follow Voit’s breadcrumbs to the heart of the “conspiracy.” A search warrant execution by the BAU has deadly consequences.

The CSI team says goodbye to Catherine Willows as she makes a life-changing decision.

D.B. Russell leads the CSI team on a hunt to find his kidnapped granddaughter.

Langston becomes more determined than ever to track down Nate Haskell, the notorious "Dick & Jane" killer, after discovering that he's kidnapped his ex-wife, Gloria.

The CSIs are shocked when they discover that a victim in a car crash is someone they are familiar with.

When an American college student working in Johannesburg is killed and his brother goes missing, the International Response Team suspects a gang could be behind both. Jack works the case with Lieutenant Ananda Doshi, a profiler he’s worked with before who has an unorthodox style of investigation.

The BAU is called to investigate a series of D.C. homicides where cryptic messages are found inside the mouths of each victim.

Voit awakens from his coma. The team finds videos from a dormant Sicarius Network killer called "The Zookeeper" indicating that the network has reactivated. With Voit still in recovery, the BAU must tackle this reawakened network on their own.

Finlay must deal with a bomb planted in her car. Russell gets a call from someone claiming to be the Gig Harbor killer.

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

Prentiss faces her past when the BAU is sent to investigate the murders of prominent businessmen, all of whom are missing their hearts. Also, Prentiss plans a romantic first date with Mendoza, but the evening is cut short by an urgent call from Rossi.

The BAU hunts for the next connection to the serial killer network when they pursue a home invasion team. Alvez and Garcia convince Tyler Green to submit a cognitive interview to unlock his memories of Sicarius.

The CSI team continues their investigation into the kidnappings and murders of young women when they learn their main suspect, Jared Briscoe, is released from jail due to lack of evidence.

The CSI unit faces the final showdown with the Gig Harbor killer whose motives are finally revealed. Meanwhile, Nick Stokes makes a decision that will affect the entire team moving forward.

The crime lab searches for a serial killer inspired by Dante's Inferno, and Brass's daughter may be one of the killer's next victims.

The murder of a popular sideshow performer sends the team behind the scenes at a carnival freak show.