Sean King and Michelle Maxwell aren’t your typical private investigators. Both are former Secret Service agents, and their unique skills – not to mention their razor-sharp chemistry – give them a leg up on conventional law enforcement. Maxwell is a former elite athlete who uses her brains, beauty and Beltway connections to solve cases. King's career in the Secret Service ended when the presidential candidate he was assigned to protect was assassinated, sending him on a downward spiral. Today, King has added a law degree to his arsenal of skills, allowing him to navigate the system in ways a typical private investigator never could. Along the way, King and Maxwell clash over everything, from her garbage-strewn car to his love of wine over beer. In the season finale, Sean's investigation of the Ritter assassination threatens to end his partnership with Michelle as she considers returning to the Secret Service. The shocking truth sends Sean back to the scene of the crime to prevent history from repeating itself. When the key witness to a company's deadly chemical spill is murdered inside FBI headquarters, King and Maxwell are trapped in the building. With a killer on the loose and Special Agent Rigby's career on the line, they have only hours to solve the murder and find a new witness to testify at a Senate hearing to bring the company to justice. King and Maxwell are hired to locate a stolen cell phone and are immediately put to the test when the search turns into an unexpected partnership with the CIA. Meanwhile, Sean receives some interesting information regarding the Ritter assassination. When Michelle's P.I. brother comes to town on behalf of his wealthy client, he enlists the help of King and Maxwell to solve the case. Their investigation leads to a strange connection between a criminally insane mob boss and the witness protection program. A congressman with a connection to Sean's past hires King and Maxwell to uncover the secret identity of a menacing tabloid blogger. When the target of their investigation is suddenly murdered, their search leads them to a hired hit man and an unexpected betrayal.