The Assassin Who Stole My Heart:

In 2003, senior CIA official Donald Fitzroy visited a prisoner named Courtland Gentry in Florida eight years into a very long sentence, which made him eligible for parole until 2031. Eighteen years later, Courtland is now known as Sierra Six, working with fellow CIA agent Dani Miranda to assassinate a target named "Dining Car," suspected of selling off national security secrets in Bangkok. However, much to Courtland's surprise, Dining Car reveals he was also in the Sierra program, previously known as Sierra Four. Before he dies, he hands Six an encrypted drive detailing the corruption of CIA official Denny Carmichael, the lead agent on the assassination mission.

Carmichael confronts Six. To stop Six and get the drive back in his possession, Carmichael hires mercenary Lloyd Hansen, a former CIA agent kicked out for his sociopathic tendencies. However, he does not attack Fitzroy directly either but instead chooses to attack his nieces, Blair and Claire, forcing Fitzroy to authorize Six's murder by the extraction team. But what no one suspected was that Six had fallen in love with Fitzroy's niece, Blair. And he will do anything to protect her and her small family. Hansen holds the Fitzroy sisters hostage in a mansion in Croatia at his base of operations. He also puts a massive bounty on Six's head to get mercenaries and assassins to hunt him down.

They infiltrate a hospital to track down Blair and Claire through Claire's pacemaker's wireless signal. She distracts him while he enters the mansion, rescuing Fitzroy, Blair, and Claire. Mortally wounded as they flee, Fitzroy sacrifices himself, attempting to kill Hansen. Hansen takes Claire hostage and drags her into a hedge maze.

Six and Miranda are forced to cooperate in the cover-up, where no action is taken against Carmichael. Six escapes custody and frees Blair and Claire, who are being held secretly. And does the cliche of running off into the sunset to marry the woman he loves to live an everyday life...