What a cool idea. Books about time travel are usually fantasy / wish-fulfillment. But what if it cane with so many rules that it hardly made sense to even try it? While the idea carried the beginning of the book, and the slow reveal of the connections between the characters carried the middle, it had lost all steam by the end.

Hey! I read a book! Took me a long time (because of life not because of the book) but I'm glad I finished. Wonderful book, worth a read.