Trio steps in for Ledger

Depp, Law, and Farrell join Gilliam's "Parnassus"

Despite the tragic death of pic's star Heath Ledger, Johnny Depp, Jude Law, and Colin Farrell have all signed on to play Ledger's character, 'Tony,' in the film.

"Parnassus," which is being produced by William Vince ("Capote"), Amy Gilliam and Samuel Hadida's banner, was shooting in London when Ledger died from an accidental overdose January 22nd.

Ledger's character is transported into three separate dimensions in the fantasy pic; these new worlds, which Ledger accesses via a paranormal mirror, will now be inhabitated by Depp, Law, and Farrell.

No word yet on when production will resume but the film is on board for a 2009 release and is skedded to be shopped around at AFM by Mandate Int'l.

Other cast members include Christopher Plummer, Tom Waits, Lily Cole, Andrew Garfield and Verne Troyer.

Gilliam and Ledger first teamed on 2005's "The Brothers Grimm."