Carl Forsman will stage the season opener, to begin previews Oct. 11 and open Oct. 26 at the Clurman Theatre in the Theatre Row complex for a run through Dec. 4.

Playwright Michael Murphy's documentary theatre-style Sin tells the tale of Boston's Cardinal Bernard Law who was called to testify against two priests who were accused of sexual abuse. The play, which uses text from actual testimony and words of other priests, victims and parents involved in the trials made its premiere at Chicago's Bailiwick Repertory Company.

John Leonard Thompson, Pablo T. Schreiber, Thomas J. Ryan, Dan Daily and Cynthia Darlow will also appear in the play.

Cullum is a Broadway veteran of such shows as Shenandoah and On the Twentieth Century — both of which garnered him Tony Awards. His turn in the musical Urinetown also earned him a Tony nomination. Other credits include Camelot, On a Clear Day You Can See Forever, Boys in Autumn, Hamlet, 1776, All My Sons, Show Boat and Old Money. Cullum recently starred opposite his son JD Cullum in Ronald Harwood's The Dresser for his hometown Knoxville, Tennessee's Clarence Brown Theatre Company.

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