Charlie and the team track a couple who are spree killers, but their actions seem to defy profiling.

The team is in a race against time to rescue fellow agent Megan from the clutches of Crystal Hoyle.

The robbery of a painting that unexpectedly turned to murder, has the team exploring a disputed provenance and possible insurance fraud.

The hit-and-run death of an interpreter may compromise a team member, and Charlie must deal with not being consulted for a paper.

Charlie and the team grapple with the concept of 'randomness' while trying to find a killer targeting drivers on the freeway.

Don and the team investigate a suspicious death at a horse track. When Charlie starts looking into the crime, he uncovers something that will send the investigation into an entirely different direction.

Blackouts all over Los Angeles leave the city in the dark. Don works with his team to figure out if the power outages are an accident or the work of terrorists.

The death of a minor league player leads to a math prodigy and stirs old feelings for Don.

Charlie's investigation of a company's toxic paving material is impeded by a new school administrator who wants him to focus primarily on his pure academic work instead.

The assassination of a California senator leads the team to questionable experimentation on prisoners, the CIA, and a man bent on revenge. Elsewhere, Larry makes an announcement that shakes Charlie.

The team tries to track the person murdering men in homes that are for sale, and Larry's dream of space may be in jeopardy.

The search for a pedophile polygamist takes an interesting genealogical turn when a quilt is found.

The search for a yacht ends up splitting Charlie's loyalties when two agencies ask for his help.

Multiple robberies at upscale restaurants bring Don's team in once it escalates to murder. Elsewhere, both Charlie and Don must do some soul searching as one tackles a psychiatric review and another questions the ethics of a pharmaceutical company that wants to use his name.

The discovery of a presumed dead police officer's badge brings the LAPD and Don's team together to solve the mystery of what happened 17 years ago. Elsewhere, Alan is served in a lawsuit, and he has to determine if his calculations were wrong when he consulted for a golf course.

One of David's childhood friends is accused of murder while sparring in preparation for an All-Out Fighting bout, and Charlie has a contest of his own trying to defend Larry's chair in a Texas Hold 'em qualifier.

The son of a multi-millionaire Latino hip-hop-Song producer is kidnapped. The kidnapper demands $3.2 million for the boy's release, but Granger and his crew only have one hour.

An old colleague of Charlie's asks for help because of the untimely deaths of some coworkers, but when she also turns up dead Don and Charlie are started on a trail that may threaten the very democracy they've vowed to protect.

Charlie splits his genius between solving a plane crash and the burglary at his home.

As letter bombs begin targeting people surrounding a previous serial bomber investigation, Don and Charlie must sift through a number of false leads to find the real killer.

Don finds himself negotiating with a hit man to find an assemblyman's son, and Larry has difficulty adjusting to terra firma.

The threat of a terrorist attack in L.A. puts everyone on high-alert as Don leads a special task force, and butts heads with Charlie and Alan.

A shipment of medicine and cash bound for Zambia is hijacked, and Don and his team find themselves working against a banker focused on retrieving his money at the cost of the people being held for the code to access the safe.

Following an explosive standoff on a bridge, Don and Charlie discover a buried secret that will change the FBI team.