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.
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.
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.
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.