Over the next 10 weeks, a federal jury will get to know the many sides of Mike Lynch, the hard-charging entrepreneur behind what once was one of Britain’s biggest and most successful tech companies.

To federal prosecutors, Lynch, 58, is the perpetrator of an epic fraud—a spinner of tales and cooker of books who falsely inflated the revenue of his software firm, Autonomy, ahead of its ill-fated $11 billion sale to HP more than a decade ago.