Just yesterday, we reported that Jessica Biel had joined the cast of Sacha Gervasi’s Alfred Hitchcock and the Making of Psycho, and now Variety reports that Toni Collette, Danny Huston, Michael Stuhlbarg, and Michael Wincott are in talks as well.

As the title suggests, the movie is about famed director Alfred Hitchcock (Anthony Hopkins) as he struggles to create his 1960 horror classic Psycho, which despite his stature in movie world, was a tough project he got little support for before its release. Helen Mirren is also onboard as Hitchcock’s wife, Alma, while Scarlet Johansson and James D’Arcy will be Psycho stars Janet Leigh and Anthony Perkins.

Toni Collette will play Peggy Robertson, the director’s longtime assistant, while Danny Huston is portraying Whitfield Cook, a friend of the Hitchcock’s wife. Michael Stuhlbarg will play Alfred’s agent, the legendary Lew Wasserman, while Michael Wincott will be Ed Gein, the famed killer whose exploits Psycho is partially based on.

Production is due to begin in the next few months.