Mark Cuban And Robert Herjavec Talk ABC's 'Shark Tank' Season 4

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Mark Cuban and Robert Herjavec chat with's Laura Saltman about the deals they make with companies and individuals on their ABC reality show, "Shark Tank." Why do some of the deals fall apart after the show wraps? Plus, how many of their deals do they actually make money on? Season 4 of "Shark Tank" premieres Friday, September 14 at 8 PM on ABC.