British actress Sienna Miller (G.I. Joe) portrays Tippi Hedren in the BBC2 network’s Alfred Hitchcock-based tele-pic The Girl, premiering on HBO on Oct. 20. Directed by Julian Jarrold from a script by Gwyneth Hughes, the film examines the iconic filmmaker’s obsessive relationship with Hedren .

According to Hughes’ research, which includes interviews with a now 81-year-old Hedren and surviving members of Hitchcock’s film crews, Hitchcock grew obsessed with the alluring blonde starlet—then an aspiring fashion model—while taking her under his wing during the making of The Birds and Marnie.

Hedren, who refused to work with Hitchcock after Marnie, was kept under contract by the director and forced to pass on other projects up until he finally sold her contract to Universal Pictures some two years later. Hedren has often said that Hitchcock ruined her career.

The Girl costars character actor Toby Jones (The Hunger Games) as Hitchcock, Imelda Staunton (Harry Potter and the Deathly Hallows) as his wife Alma Hitchcock and Penelope Wilton (Shaun of the Dead) as his assistant Peggy Robertson.

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