It depends on your perspective. Some elements of 'A Way Back' are inspired by true events, but there might be fictional additions for dramatic effect. Overall, it has a foundation in reality.
I'm not sure specifically as there could be many novels with that title or a similar concept. It might be about a situation where the characters are in a journey or decision - making process from which there is no return, perhaps in a physical sense like being trapped in a strange place, or in an emotional or moral sense like making a choice that changes their lives irrevocably.
I don't know who the author of the 'no way back novel' is. There are so many novels out there, and without more information, it's difficult to determine the author.
I'm not sure specifically as I haven't read this novel. It could be about a journey where there is literally no way back, perhaps a character's decision that leads them into an irreversible situation, like getting involved in a dangerous adventure or a complex relationship.