narrator: ...bill mastro helps turn a niche hobby into a multi-million dollar criminal enterprise.referred to by some as the godfather of the industry. he really, on his back, brought this industry into what it was and what it is. narrator: and it isn't about kids getting baseball cards in packs of gum anymore. lichtman: any hobby, business, whatever, where money can be made, the cockroaches fly in. narrator: and like baseball itself, this industry has winners, losers...