“Flood” is a British‑Canadian disaster thriller directed by Tony Mitchell. When a freak storm coincides with spring tides, a massive surge overtops the Thames Barrier and submerges London. Marine engineer Rob Morrison (Robert Carlyle), his father Leonard (Tom Courtenay), and ex-wife Sam (Jessalyn Gilsig) race against time with government crisis teams—including Deputy Prime Minister Campbell (David Suchet)—as the city plunges into catastrophe. Personal sacrifices and bold engineering gambits become humanity’s final hope against the deluge.