Complex sentence: The gang gives him the costume of the Red Hood, which has been worn by many men before; this way, the gang is able to falsely identify the Red Hood as their leader on all crimes they perform when things go wrong.
Split into simpler sentences: The gang gives him the costume of the Red Hood, which has been worn by many men before. This way, the gang is able to falsely identify the Red Hood as their leader on all crimes they perform when things go wrong.