Complex sentence: Paul finds Tom again, but the mob (with the assistance of Julie and Gail, with her Mister Softee truck) chases Paul and he ultimately seeks refuge back at the Club Berlin.
Split into simpler sentences: Paul finds Tom again, but the mob (with the assistance of Julie, Gail, and Gail's Mister Softee truck) chases Paul. He ultimately seeks refuge back at the Club Berlin.