Timeline by Michael Crichton -- A Recommendation

I recently read a book called Timeline by Michael Crichton. I couldn't put the book down! After talking to Lisa I was reminded that this is one of her top five favorite books and rightfully so. I guess I am recommending an old recommendation. Here is the synopsis:

In an Arizona desert a man wanders in a daze, speaking words that make no sense. Within twenty-four hours he is dead, his body swiftly cremated by his only known associates. Halfway around the world archaeologists make a shocking discovery at a medieval site. Suddenly they are swept off to the headquarters of a secretive multinational corporation that has developed an astounding technology. Now this group is about to get a chance not to study the past but to enter it. And with history opened to the present, the dead awakened to the living, these men and women will soon find themselves fighting for their very survival–six hundred years ago. . . .