This series highlights some of the works of one of the most well known authors out there and my favorite, Mr Stephen King.
Cell was published in 2006 and is the story of the apocolypse being started by a pulse sent through cell phones. Basically, everyone who was on their phone when the pulse was sent out was turned to a type of zombie that shares a linked mind. Mr King did have the ability to see the future sometimes, I think. It was made into a pretty popular movie starring John Cusack and Samuel L Jackson.
The story involves them travelling to Kashwak, but you won't have to go that far.
Avoid the flock and find the cache!