|Episode Online Video|
S04, E05 (First Aired:
When a bank is robbed and the contents of wealthy clients' safe-deposit boxes donated to charities, Don and Charlie must uncover the motivation of the humanitarian thief.
S04, E06 (First Aired:
Don feels responsible when a woman in the Witness Protection Program is gunned down in her home.
S04, E07 (First Aired:
Don's team investigates the world of alternate-reality gaming when a player plunges to his death; Amita's hidden gaming ability becomes the key to tracking down the killer.
S04, E08 (First Aired:
Don's team tries to find the captors of an heiress who was abducted to punish her industrialist father.
S04, E09 (First Aired:
A comic-book convention becomes a crime scene when a deadly robbery leads to the disappearance of an extremely rare comic book.
S04, E10 (First Aired:
A former FBI subcontractor shoots an agent at headquarters and takes a hostage, leaving the team with severely limited options.
S04, E11 (First Aired:
Charlie becomes the target of physical intimidation aimed at disrupting his work on the case of a missing investigative journalist.
S04, E12 (First Aired:
A serial rapist uses his position as a police officer to ensnare his victims.
S04, E13 (First Aired:
During a bust of an inner-city meth lab, Don's instinct leads to the arrest of a bystander who has a greater scheme planned.
S04, E14 (First Aired:
Robin, an old flame of Don's, returns to prosecute an incarcerated criminal, but when three witnesses involved in the case are murdered, Don and the team fear she will be the next victim.
S04, E15 (First Aired:
Don's team tries to figure out the motive when the family of a fugitive (Sharif Atkins), on the run for murder, is kidnapped by a gang of military thieves.
S04, E17 (First Aired:
The team uncovers a conspiracy of embezzlement and bribery while investigating the murder of a young rap star.
S04, E18 (First Aired:
Differing beliefs have Don and Charlie at odds when they investigate a case that involves national security; Megan faces a crisis of conscience.
S01, E01 (First Aired:
FBI agent Don Eppes recruits his younger brother, a brilliant mathematician, to help search for a serial rapist who has begun murdering his victims.
S01, E02 (First Aired:
Don recruits Charlie to help figure out where a pair of serial bank robbers will strike next, but his accurate prediction fails to take into account the robbers' motives, and an agent is killed.
S01, E03 (First Aired:
Don relies on Charlie's mathematical insight to help stop a deadly virus that may have been the product of an act of bioterrorism.
S01, E04 (First Aired:
Charlie convinces Don to launch an investigation when an engineering student is found dead from an apparent suicide.
S01, E05 (First Aired:
When a mathematician (Neil Patrick Harris) gets close to solving the Riemann hypothesis, a difficult math problem whose solution is worth millions, his daughter is kidnapped.
S01, E06 (First Aired:
Don enlists Charlie to help stop a series of copycat railroad accidents involving negligence and an undecipherable numerical code.
S01, E07 (First Aired:
The investigation of two teens leads Don and his team to a counterfeiting ring.
S01, E08 (First Aired:
Don fears he has sent the wrong person to jail when new information arises in an old case, so Charlie looks at the evidence but finds some flaws.
S01, E09 (First Aired:
Don and his team call on a senior sniper instructor from Quantico (Lou Diamond Phillips) to help them stop a shooter who goes on a killing spree in Los Angeles.
S01, E10 (First Aired:
When the hijackers of a truck carrying radioactive material threaten to detonate a dirty bomb in Los Angeles, Don and the team race against time to thwart the plot.
S01, E11 (First Aired:
Don and his team must investigate the death of an independent computer researcher with a Defense Department contract, recruiting Charlie to decipher the victim's computer data.
S01, E12 (First Aired:
Don asks Charlie to help determine a mysterious aircraft's point of origin and is surprised when the probe turns into a murder investigation.