After pleading not guilty, Milke stood trial and tried to convince a jury that her account -- and not the detective's -- was the true one.

CNN: STORY HIGHLIGHTS

Such is the obscurity of Softbank's tax arrangements, its corporate structure and the prospects of its investments that, to gain even a partial view of the firm's true value, you need to be a trained accountant, a stockmarket analyst and a private detective rolled into one.

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Du Bois, who makes a cameo as a detective in the movie, gave the film company and director credit for making an adaption of the true story.

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