Megan Boone Bids Farewell to 'The Blacklist' With Heartfelt Tribute TV The Elizabeth Keen depicter marks her final episode on the NBC crime drama series with an emotional post, thanking the cast and crew members for their support. Jun 27, 2021 The Blacklist" aired in America on Wednesday (23Jun21). The actress, who played Liz Keen in all eight seasons of the show, bowed out with an emotional Instagram post, thanking the cast and crew for their friendship and support. "This experience, for me, has been an entire life inside of my own life," she wrote alongside a shot of herself and co-star