Casper, traditionally an occupant of the horror and fantasy genres, sidesteps here into the science fiction genre as well. He travels through time and creates an alternate timeline in which Paul Revere really does alert the colonists to the Redcoats, as opposed to the bulk of the work having been done by William Dawes. I would find this almost wonderfully clever if I hadn't already pegged the entire Casper The Friendly Ghost "creative" team as morons