After his FTX crypto empire collapsed in November last year, Sam Bankman-Fried portrayed himself as a hapless but well-intentioned chief executive who made a series of calamitous mistakes, but never knowingly committed fraud. Prosecutors didn’t buy it. Bankman-Fried was arrested the following month and charged with orchestrating a scheme to bilk investors and FTX customers out of billions of dollars. Here’s what you need to know before SBF’s trial begins on Oct. 3.