Christopher Farnsworth The President's Vampire

For 140 years, Nathaniel Cade has been the President's Vampire, sworn to protect and serve his country. Cade's existence is the most closely guarded of White House secrets: a superhuman covert agent who is the last line of defense against nightmare scenarios that ordinary citizens only dream of.

A man stands up in a crowded movie theater. A moment later, everything is burning. When the smoke clears and the bodies are removed, there is no trace of any bomb, or device, or even a matchstick. There's just the corpse of one man, a statue in ash, with an obscene grin still upon his charred skull.

“This is not a man. In almost a hundred years, I have seen it shot, stabbed, drowned, burned, decapitated, dismembered, and buried. And in almost a hundred years, there’s only one thing that’s ever been able to kill it…Me.”