Lightman tries by all means to stop a man filled up with revenge from robbing a bank.

Lightman defends a wrongly accused man from an increasingly hostile mob. In the process of exonerating him, Lightman uncovers a dark secret that helps a damaged mother and her daughter begin the healing process.

The Lightman Group is hired to examine police profiling techniques in the wake of an incident involving Wallowski, and Internal Affairs attempts to leverage Lightman's relationship with Wallowski to get him to incriminate her.

While vetting an art museum staff for security leaks prior to a major exhibition, Lightman meets a beautiful woman who entangles him in a game of cat-and-mouse.

When Lightman investigates a coal mine explosion thathuged six miners, he suspects that foul play may have been involved. To find the truth, he puts his life at risk and descends below the surface. Meanwhile, the FBI comes back to The Lightman Group looking for help with another case, and Foster and Torres offer to work pro bono.

Lightman tries to free a wealthy woman from the control of a cultlike leader.

Lightman helps a woman with early-onset Alzheimer's solve the puzzle of her fractured memory. In the process, he unearths a secret that could prove deadly in the present.

Lightman is hired by Jim, a terminally ill, owner of a successful chain of restaurants to find his daughter's hugger as his dying wish. In the process of the investigation Lightman suspects Jim's sons may be involved in her passing.

Lightman tries to get a patient released from a mental hospital, in the process he questions his own sanity.

Lightman is hired by a wealthy woman to look into her new boyfriend's background.

Lightman is hired to investigate three high school students responsible for a fatal traffic accident, which takes a turn for the better when he finds the heroic paramedic who was first on the scene.

Lightman investigates the kidnapping of the daughter of Det. Bradley; he blames his wife for the kidnapping, though he hides a few secrets of his own.

Lightman investigates Zach Morstein, the creator of a social networking site who becomes a cuddle suspect when one of the co-founders ends up dead.