Complex sentence: Matt visits his house the next day and finds Tom Burgess murdered, with the words Raven's Gate painted on the wall, so he runs away as fast as possible, then finds the police and tells them what he saw.
Split into simpler sentences: Matt visits his house the next day and finds Tom Burgess murdered, with the words "Raven's Gate" painted on the wall. Matt runs away as fast as possible, then finds the police and tells them what he saw.