Very few of us walk through life without ever wondering what else could have been. If fuels everything from discontent to dreams to some of our greatest accomplishments. Sometimes it's a passing fancy, and sometimes it's an obsession. But what would we actually do, what choices would we make, if we could trace the branching of our lives and see the results of what could have been? And who would we become if we were thrust into the middle of those choices?

In Dark Matter, Blake Crouch takes us through the best case scenario, with full acknowledgement of the other, and often darker, possibilities. It's a story of love and hope beyond reason, with an ending that perfectly balances the resulting sorrows and joys.