The Witch of the Waterfall
Series Episode Number: 4Due to Broadcast on: Sun 14 Dec 2025 - 9:20pm [BBC One] (United Kingdom)
Running Time: 44 minutes
Barclay and Salt go on the run in a war-torn London as UNIT reels from disaster. But when Tide threatens the land and Gunsberg advances his plans, the Severance schemes demand blood.
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