Invictus by Ryan Graudin From Goodreads: Time flies when you’re plundering history. Farway Gaius McCarthy was born outside of time. The son of a time-traveling Recorder from 2354 AD and a gladiator living in Rome in 95 AD, Far’s birth defies the laws of nature. Exploring history himself is all he’s ever wanted, and after failing his final time-traveling exam, Far takes a position commanding a ship with a crew of his friends as part of a black market operation to steal valuables from the past. But during a heist on the sinking Titanic, Far meets a mysterious girl who always seems to be one step ahead of him. Armed with…