Aftershock by Alex Croft

Former FBI Hostage Negotiator McKenna Davis had hoped that joining SPNI, a private security company in Savannah, would allow her the new beginning she craved. With her marriage and law enforcement career in ruins in the aftermath of tragedy, she needed a fresh start and made her move. The stigma of internal investigations into her actions in the line of duty had dragged on long past its breaking point, and salvaging her reputation seemed an impossible feat. The last person McKenna expected to encounter in Georgia was the one man whom she had foolishly spent a night of passion with months earlier in Washington, D.C., nor did she foresee taking on his family as SPNI clients. FBI Senior Special Agent Blake Anderson at the Office of Professional Responsibility never anticipated to run into the only woman who had broken through his emotional fortress in decades. Neither did he bargain on the twist of fate that saw him recusing himself from Davis' investigation and instead assigned to that of her Savannah colleague, ex-MI6 operative Nia Munro, after the takedown of a corrupt billionaire business tycoon. Blake's half-sister, Candice Roberts, works on a clandestine engineering project and retains SPNI's services to review her rural Georgia home security. Fearful that something bad is about to happen, the engineer pulls out all the stops. Candice's life is thrown into disarray when an unexpected discovery on her property brings one-time colleague and CEO of a rival engineering firm, Oliver Westicott, to her doorstep. Kidnapped and held captive in Cuba, the two engineers find themselves in a world of trouble as a terror group coerces them into weaponizing drones. Forced to rely on each other for survival, the duo goes to extreme lengths to get a message out and buy more time in anticipation of being rescued. Aftershock is the fifth book in the Savannah Sizzle series. Joined by Westicott's sister-in-law, the impromptu team scrambles and puts everything on the line to save