Tear in Time is a fantastic fantasy novel about time travel. Dr. David Warner is a brilliant young surgeon who goes back in time through a portal. He ends up right in the middle of the Civil War, where he teams up with Dr. Jeb Morgan, a Civil War doctor. David teaches Dr. Morgan about modern medicine, while Dr. Morgan teaches David about real survival, prior to the age of needing a cell phone to “survive.” Author Christopher Petersen takes several jabs at the shallowness or modern society and our dependence on our conveniences in this novel. He also presents a plausible alternate history had events gone a certain way, given a small disruption in the past. I was very impressed by the attention to detail that Petersen paid to historical figures, making them come alive, and to medical terminology (I understand amputation much better now!).