Earlier today we learned that Jessica Biel will be playing Vera Miles in the star-studded real life pic Alfred Hitchcock and the Making of Psycho, and now four more thesps are lined up to join the project. Anthony Hopkins is set as the famous director, Scarlett Johansson is playing Psycho scream queen Janet Leigh, Helen Mirren is set as Hitch’s wife, and James D’Arcy is up for the role of the uber creepy Anthony Perkins. Now Variety reports that Toni Collette, Danny Huston (X-Men Origins: Wolverine), Michael Stuhlbarg (A Serious Man) and Michael Wincott (The Crow) are in negotiations to take on supporting roles. Hit the jump for more.Per Variety, Collette is in talks to play Peggy Robertson, Hitchcock’s longtime assistant who was “fiercely protective” of her boss, Huston is in line to play Whitfield Cook, a friend of the director’s wife who collaborated with her and co-wrote Stage Fright, Stuhlbarg would take on the role of Lew Wasserman, Hitchcock’s charismatic agent and friend, and Wincott has the role of Ed Gein, the serial killer whom Psycho was based on.Alfred Hitchcock and the Making of Psycho will document the director’s struggles to get the project off the ground. Studios were wary of producing Psycho and Hitchcock was forced to work with the crew from his television series, Alfred Hitchcock Presents, to make the film as quickly and efficiently as possible. This isn’t the only film in the works that highlights the Master of Suspense, as just yesterday we got our first look at Toby Jones and Sienna Miller as Hitchcock and his The Birds star Tippi Hedren. The BBC2 film, entitled The Girl, focuses on the director’s obsessive relationship with Hedren. I’m intrigued by both films, but I’m especially excited to see Hitch’s road to Psycho onscreen. Furthermore, Hopkins is an inspired choice to take on the master filmmaker and I can’t wait to see his portrayal.