Homeland Heroes Series by Susan Sleeman

When cybercriminals hack into the US Marshals' Witness Protection database and auction off witnesses' personal details to the highest bidders, the RED Team led by FBI Agent Sean Nichols begins a high-stakes chase to find the hacker. But before he can even get started, the first witness is targeted and barely escapes with her life... moreWhen cybercriminals hack into the US Marshals' Witness Protection database and auction off witnesses' personal details to the highest bidders, the RED Team led by FBI Agent Sean Nichols begins a high-stakes chase to find the hacker. But before he can even get started, the first witness is targeted and barely escapes with her life. Sean believes Phantom, an obsessed hacker who previously outwitted the top minds in the field, is behind the attack, and Sean needs this witness's help, as she's the person who has come closest to discovering Phantom's identity. Trouble is, she's a witness under the care of US Marshal Taylor Mills, and Sean is reluctant to work with the captivating marshal who knows his deepest secrets. But Phantom claims he knows where the witness is hiding and will kill her, so to stop the hacker, Sean and Taylor must work through their personal pain and learn to trust each other. . . . The seconds are ticking down before someone dies. less

It's the intel every agent fears--terrorists have been smuggled into the country, intent on unleashing the most deadly attack since 9/11. With the threat imminent, FBI Agent Kiley Dawson and ICE Agent Evan Bowers are charged with taking down this terrorist cell. The only problem is Kiley blames Evan for the death of her former partner, and she can barely be in a room with him. But with millions of lives on the line, she has no choice... moreIt's the intel every agent fears--terrorists have been smuggled into the country, intent on unleashing the most deadly attack since 9/11. With the threat imminent, FBI Agent Kiley Dawson and ICE Agent Evan Bowers are charged with taking down this terrorist cell. The only problem is Kiley blames Evan for the death of her former partner, and she can barely be in a room with him. But with millions of lives on the line, she has no choice.If it wasn't for a bad call Evan made, Kiley's former partner would still be alive, and Evan has to live with that guilt for the rest of his life. When he starts falling for her, the agent's death seems an impossible obstacle--but it's also the last thing he needs to think about. As the terrorist plot targets Kiley's family, the two are pushed to the breaking point in a race to save countless lives. less

"When Homeland Security Agent Addison Leigh is attacked and left for dead, her estranged husband, ICE Agent Mack Jordan, discovers that she's in a coma. Full of regret, he promises to find her attacker, but she wakes up forgetting both the incident and her marriage. When another attempt is made on her life, it's clear the killer won't rest until she's dead"--