Following a tradition of high-octane action movies like John Wick and Kill Bill, the Netflix revenge flick Kateis a roller-coaster ride of thrills. Mary Elizabeth Winstead stars as the titular Kate, an assassin racing against the clock to find the conspirators who poisoned her with a highly radioactive substance known as Polonium-204. Winstead is joined by Woody Harrelson as Varrick, Kate’s handler, and Tadanobu Asano (Shōgun) as a yakuza boss named Renji.