Dark Matter: Blake Crouch

This was a fast pace interesting novel. A man, Jason, heads out to a friend's celebration of an award for his achievements and thinks about how ordinary he has become compared to his friend. Upon walking home he realizes how lucky he is as he loves his wife and son. A man in a hoodie kidnaps him and it is obvious he has been following Jason for some time and knows Jason's wife and son. Before drugging Jason, the unknown man asks if he is happy and if he would have lived his life any differently and made different choices. Jason said he wouldn't have and then blacks out. Jason awakens in a lab where the people seem to know him and he has been a part of some experiment. He escapes the lab and goes home to find his wife and son don't exist. He then goes to the hospital because people from the lab chase him to his house. The hospital says there is a drug in his system and he doesn't recognize it and neither does the doctor. He finds an address for his wife at her maiden name and when he gets there she is not home, but he sees a flyer for an art gallery opening she is having that night. He goes. She knows him. She doesn't have a son and hasn't seen him in a while. He realizes he has invented a machine that can travel to alternate dimensions. He understands that another Jason from another dimension that invented the machine has just swapped lives with him. With the help of someone at the lab they escape back into the machine,but realize getting back is not going to be easy. There are a countless number of other dimensions and we get to glimpse the other possibilities where there are disease break outs, snow ins, one or both of them have already died etc. He finally makes it back home only to find out there are at least 10 other Jasons who have found this dimension since it was the only one where he was happy. In the end he goes back into the time machine with his wife and son knowing they can't get back, but that as long as they are together they will be happy, and they will never be safe in their world again.