I mean, think about it. Every other method of travel has a governing body of some kind to make sure people get where they’re going as safely as they can. There are so many rules for driving, they have whole books full of them! Pilots train and train, laws are enacted, and vessels have regulations before sailing on the high seas. Are these systems perfect? Of course not. But, in concept, they’re there to regulate people’s behavior and try to keep chaos at bay. So, why wouldn’t the same apply to time travel? Time travel poses a huge risk should someone mess it up. Ask Timmy Turner and his Time Scooter. Ask George Bailey and his Wonderful Life. Changing timelines, even the smallest thing, can change the entire world’s trajectory for the worse. Enter: the timeline regulators. Sometimes called time agents, sometimes an unnamed government body, sometimes just…a man. These are the people keeping the timelines how they should be. They fix holes left by people that should-have-been, send the people out of time back where they ought to be. The good news? There are so many books about this very thing out there, just waiting for you. Whether the time agents are the good guys or the bad, here are 10 novels about timeline managers or cleaner-uppers or whatever you want to call them! Time travel on the mind? Here are 20 must read time travel books or these 4 books about lost time!