Complex sentence: Initially successful in selling the product and attracting investors, Chummy is soon arrested and jailed for fraud after many investors lost their money, including Bill's close friend John "Spider" Mason, who had invested most of his life savings.
Split into simpler sentences: Initially successful in selling the product and attracting investors, Chummy is soon arrested and jailed for fraud. Many people had lost their money investing in the scheme, including Bill's close friend John "Spider" Mason, who had invested most of his life savings.