Numerous expeditions have been dispatched to explore the newly-discovered and bewildering Area X, but participants always come back altered or die prematurely (when they return at all). An unnamed biologist, whose husband participated in a previous expedition and has since died of cancer, joins the newest team setting out, and things get pretty creepy right away.
I guess I was expecting this to be a thriller of some kind, maybe even psychological. It was overall...unexciting, with no real climax of "aha" moment. Even the mysterious creatures were rather dull. I found I didn't really care what happened to the protagonist, and certainly not enough to read any further into the series.