DI Humphrey Goodman and the team are left stumped in the first episode of the new series when millionaire environmentalist and scientist Dan Hagen is shot on his boat while out at sea.董无伤手腕一翻，身子就在空中一翻，墨刀猛磕对方刀身；祖河流仍是不敢硬碰，被迫再度变招，一刀横抹，董无伤依然以不变应万变，你怎么来，我就怎么去。