"So it goes..."
You may be thinking that based on the title it is the fifth book in a series of horror novels, but I assure you that it is not. Slaughterhouse-Five is a very thought provoking and poignant anti-war novel that has elements of science fiction, including 4th dimensional time travel and aliens. It’s a nonlinear story that follows a man named Billy Pilgrim as he travels throughout different moments in his life, weaving back and forth through differing time periods. He travels from his time as a chaplain’s assistant in World War II to his normal life with his wife and children to being an exhibit in an alien zoo on the planet Tralfamadore.
By becoming “unstuck in time”, as Billy puts it, he is able to relive these moments in his life and reflect upon them more deeply. This book is one of the best representations of 4th dimensional time travel that I've come across, and if you ever struggle to grasp the concept of time as the 4th dimension, as I do from time to time, then this book will certainly help create a better understanding of it. The book centers around Billy Pilgrim’s experiences during the war and all of the atrocities that he has seen, culminating at the end with the Bombing of Dresden, a moment which influences the rest of his life.
By being told out of chronological order, the structure of the book drives the importance and impact of the moment rather than just describing what happens next and it creates a sort of puzzle that the reader must put together. It is full of satire, wit, and black humor that is vintage Vonnegut and is one of the strangest meditations on war and humanity. If you want an extremely thoughtful book that challenges your perspective, then I highly recommend Slaughterhouse-Five by Kurt Vonnegut.