9PM | DISCOVERY — Deadliest Catch Lynette Rice gave the season premiere an A–. Fifteen extraordinary seasons in, the show still knows how to pump up the drama—like another health scare with the beloved Capt. Sig Hansen, and an ongoing beef between Capt. Keith Colburn and his poor, put-upon brother Monte. But the true hand-wringing comes when the fishermen realize all the king crab have congregated in a relatively tiny 800-square-mile area of the Bering Sea.