In 2019, it was announced that she would be starring in "Two Weeks to Live", a six-part a dark, deadpan comedy revenge drama. Williams plays Kim Noakes, who (following the murder of her father) has been raised in total isolation "living off the grid" in the wilderness by her overprotective doomsday prepping badass survivalist mother, Tina (played by Sian Clifford). Action is set in motion following a seemingly harmless prank played on Kim of a fake video that makes her believe that everybody in the world has just two weeks to live. Kim – raised to believe the end times were close – sets off to kill the man who murdered her father in front of her when she was a child. The "Guardian" considers that Williams "excels in her fish-out-of-water role, flitting between hapless and determined, worldly and childlike". "Two Weeks To Live" lets Williams flex comedy muscles while also show off her stunt fighting and stunt skills. The "NME" described the action drama as also genuinely funny. The UK series, written by Gaby Hull and produced by Kudos for Sky UK, debuted on Wednesday 2 September 2020, and will premiere in the U.S. on HBO Max on 5 November. The six part first series also stars Sean Knopp, Mawaan Rizwan and Taheen Modak.