The Mackies think they’re finally safe. They’re not. Robert Mackie just wants to bring the children home and put the vampires behind them. But vengeance has a long memory—especially when it’s undead. Brian, burned and humiliated, is coming for them. As Robert prepares for a final showdown in San Antonio with enemies from his past, ancient vampire Vargas races to stop Brian before he exposes their world. The final battle is coming—and not everyone will make it out.

All Robert Mackie wants is to get his niece and nephew home after rescuing sixty children from a vampire lair in the Guadalupe Mountains. But a detour to deliver a final report turns deadly when a vengeful vampire family from Detroit comes looking for blood. In this thrilling sequel to Guardians, Mackie learns that with vampires, nothing is ever truly over.

Centuries of peace between humans and vampires end after a deadly incident on the Rio Grande. As vampires seek a new home, ex-DEA agent Robert Mackie’s mission to find a traitor puts his niece and nephew in danger. Thirteen-year-old Greg Pike becomes the target of a vampire hunt, and only Guardian Carlos Santiago can restore order—before it's too late.

When Dyan Strother offers to cooperate in witness protection—on one condition—Deputy U.S. Marshal Robert Mackie agrees to help solve an eight-year-old murder no one knows happened. Assigned as her protector, Mackie expects a quiet case in a small Nebraska town. He couldn’t be more wrong.

After a freak accident, Deputy U.S. Marshal Sylvia Wallace wakes up in a future where the Janus Project no longer exists - and she's surrounded by prison escapees. With only a cryptic note from the past to guide her, she must survive long enough for help to arrive from familiar names: Robert Mackie and John Callan. But staying alive may be the hardest part.

After losing his family to a ruthless criminal, Army veteran John Callan seeks revenge—but instead lands in a top-secret witness protection program known as the Janus Project. Life under Janus is safe—until his enemy escapes and comes looking. Torn between his fabricated identity and a burning need for justice, Callan must decide which reality to embrace. It's not just about where he's hiding—it's about when.