Brilliant scientist and government operative Dr. Reagan "Ray" Brady is a man with a shadowed, and painful, past. He should be dead. In fact, the man he was IS "dead," and the identity he now has is not the one with which he was born. Were it not for two faithful friends, now dubbed Jay and Ernie, all three men would truly be dead.

Instead, Ray has what he considers the perfect life: the three now work for an ultra-secret division of the Department of Homeland Security, on the lookout for invasion by rather unique sorts of illegal aliens - "Santa Clauses," or extraterrestrials, and "Easter Bunnies," or time travelers. This team includes not only Ray, but his wife and team leader, Samantha Brady. The team's "mascot" is their one year old daughter, Abigail.

Things couldn't be any more perfect for Ray - until a mysterious man shows up, leaving several dead men in his wake. When Ray's team confronts the man in the Big Apple, Ray is nearly beaten to a pulp, then watches as the man leaps from the roof of a ten story building - and vanishes in mid-air. Meanwhile, Samantha is watching video from the Y-12 Plant in Oak Ridge, Tennessee, and seconds after his disappearance from NYC, sees the same man saunter calmly in for a full guided tour of the facility. A genetic scientist, whose work is on the cutting edge of research, disappears from his locked office. And
large quantities of gold and other items are being stolen from within bank vaults and other secure facilities around the world. Most disturbing is the missing fissile material from Oak Ridge.

Who is this man? Why does his image show up through three centuries of Earth's history? How do he and his men manage to travel seemingly
instantaneously? What does he intend to do with all of the stolen wealth and dangerous material he has amassed? And can Ray and his team stop him before Ray loses everything he now holds dear?