Earlier we reported on the addition of Jessica Biel to 'Alfred Hitchcock and the Making of Psycho.' Now the film with the self-explanatory title has added a whole host of stars to its already prestigious cast.

According to Variety, the film, from Fox Searchlight and director Sacha Gervasi, will also co-star Toni Collette, Danny Huston, Michael Wincott, James D'Arcy, and the fantastic Michael Stuhlbarg ('A Serious Man'). These names join the previously announced Helen Mirren, Scarlett Johanssson, and Anthony Hopkins.

D'Arcy has  signed on as Anthony Perkis, Collette will play director's assistant Peggy Robertson, and Stuhlbarg will play Hollywood agent Lew Wasserman. Interestingly, Wincott has signed up as Ed Gein, the serial killer that inspired 'Psycho,' as well as 'The Texas Chainsaw Massacre.'

Hopkins will play the role of Hitchcock, while Johansson has been cast as Janet Leigh, and Biel will take on the role of Vera Miles. This is shaping up to be one locked and loaded cast, barring any late-breaking third act twists.