Cancel your plans for 10 pm Eastern tonight because that is when PBS’ Frontline series returns with what promises to be a fascinating look at the DOJ and the SEC’s recent crackdown on insider trading. Tonight’s program (“To Catch a Trader”) includes detailed interviews with FBI agents, traders, hedge fund executives, journalists and others who provide exclusive insights into the DOJ’s massive “Operation Perfect Hedge.” Operation Perfect Hedge has already produced criminal charges against 83 people and four entities, and 78 convictions (and counting) to date.