An enormous spaceship designed to last for multiple generations sets out with colonists.  There are two groups of colonists.  One group is cryogenically encased in capsules to be awakened when the destination is reached.  One group is to live and breed and die keeping the mission alive and the spaceship functioning.  Amy is jolted awake when she is thawed out much too early, and faces an altered society.   I felt the sense of entrapment and claustrophobia aboard the ship and got caught up in this well-paced mystery thriller.  Planned trilogy. Excellent!

It is definitely worth going to the book’s website to view the diagram of the ship: www.acrosstheuniversebook.com