The novel Dark Matter by Blake Crouch illustrates how just one choice can drastically change the outcome of a person’s life. Although he does not feel he has reached his full potential as a scientist, Jason Dessen is happy with his life. One day, a strange man abducts him and he is transported to a world where he did achieve his scientific goals. Although he is lauded as a scientific genius, all Jason wants to do is get back to his family. Themes in this science-fiction thriller explore the basis of one’s identity, the impacts of our regrets, and the use of the scientific process.