Publisher's Synopsis
"In a world plagued by recurring viral outbreaks, Mark Kaiser, a master of shadows, has successfully thwarted three previous incidents. Now, facing the fourth and most dangerous virus yet, Kaiser's luck is put to the ultimate test. Will he be able to stem the tide once more, or is this his greatest challenge yet?
With the stakes higher than ever, Kaiser must confront the chilling question: Is he truly the sole player lurking in the shadows, or is there more at play?
Discover a gripping tale of suspense and sacrifice in this thrilling novel."
