Complex sentence: Bean tricks Achilles into a trap in an air shaft, forcing him to confess all of his murders onto a recorded tape, which Bean shows to the school's administrators, resulting in Achilles' expulsion and placement in a mental institution.
Split into simpler sentences: Bean tricks Achilles into a trap in an air shaft, forcing him to confess all to his murders onto a recorded tape, which Bean shows to the school's administrators. This results in Achilles' expulsion and placement in a mental institution.