Kate spends much of season five trying to do good through her position as the CEO of Lockwood Corporation and make amends for her past actions.
Unfortunately, Bob Cain (Michael Dempsey), Kate’s chief operating officer and father figure, leaks sensitive information to a reporter about the pipeline that she helped get approved years ago. He planned to initiate a no-confidence vote and get Kate booted from the company. Bob also dug into Kate’s time in London, knew that she helped cover up the murder of Rhys Montrose (Ed Speleers), and threatened to release that information to ruin her reputation further.
With Kate’s green light, Joe murders Bob. But killing Bob reawakens Joe’s lethal side, and he and Kate fail to see eye-to-eye. While Joe relishes murder and feels no remorse, Kate is haunted by what happened to Bob. She also learns new things about Joe’s time in Madre Linda and discovers his present-day affair with Bronte.
Kate teams up with season four character Nadia (Amy-Leigh Hickman) and Joe’s season three love interest Marienne Bellamy (Tati Gabrielle) in the hopes that they can take Joe down once and for all by killing him in his own cage at Mooney’s.
But Joe, already steps ahead, digs a spare cage key out of his arm and frees himself.
Kate and Joe tussle in the basement while Kate’s sister Maddie Lockwood (Anna Camp) sets Mooney’s on fire. Joe shoots Kate in the stomach, and she knocks him out by hitting him with a mallet.
While Kate and Joe are both on the floor, injured and exhausted, he admits that his first wife, Love Quinn (Victoria Pedretti), didn’t die in a fire — he poisoned her and started the fire to get rid of the evidence. Kate, relieved, reveals that she secretly took an audio recording of Joe’s confession to hand over to the police.
In response, Joe tells Kate that she can die happy now. She closes her eyes and seemingly dies, but in the finale, viewers learn that Kate survived the fire.
Kate leaves the C-suite life behind and returns to her love of art, championing Marienne’s work. She also becomes a full-time parent to Joe and Love’s son, Henry (Frankie DeMaio).
