DUTY TO PROTECT Thirty feet underwater when her oxygen tank fails, Caley Flynn fears it's been sabotaged—and she'll be the next to die. Her intern's already dead, her home breached and something's amiss at her Florida marine-life rescue center...but no one believes she's in danger. Except Shepherd Lightman. When Caley's brother asked him to check on her, the marine turned security specialist hoped it would be a case of calming down a nervous veterinarian. But the threats are all too real. Rescuing Caley and remaining alive isn't easy, but resisting his boss' sister is where the real danger lies. Because with his heart in the balance, he'll do whatever it takes to stop a killer who's desperate to keep a secret hidden.

A federal agent in the crosshairs Can The Security Specialists protect him? Secret Service agent Evan Novak becomes the target of multiple hit men when someone puts a two-million-dollar bounty on his head. Is it the gunrunner he’s tracking...or a traitorous agent? Framed and wanted, Evan reluctantly accepts protection from bodyguard Jody Gallagher, his former love who lost her Agency career because of him. But then the bounty is raised to include Jody…

A stalker on her tail… The Security Specialists at her side Security expert Wilder Flynn wastes no time putting behavioral expert Cosette LaCroix under his 24/7 protection when her stalker finds her in Atlanta. Wilder keeps Cosette close to guard her from the quickly escalating threats and attacks. But can he accomplish the mission without breaking his strict code against dating employees? Or putting his heart and life at risk?