Continuity mistake: After Frank escapes walking on the rooftops, he climbs a balcony and a boat packed with people disappears between shots.
Continuity mistake: When Frank jumps off the rooftop and throws a cop to the water, his hat swaps from being on the right to on the left.
Continuity mistake: Foursome dining behind Elise and Tupelo in scene on train: the amount of water in the girl's (in the black dress) glass changes too much too quickly. There isn't enough time in between shots.