LAB co-artistic directors Philip Seymour Hoffman and John Ortiz present the benefit evening, subtitled A Musical and Dramatic Exploration of a Really Dark Feeling, May 24 at the Lucille Lortel Theatre.

The 8 PM performance of Obsession will feature a cast that currently includes Paula Devicq, Jerry Dixon, Melissa Errico, Ron Cephas Jones, Mark Linn-Baker, Trevor Long, Maude Maggart, Christopher Meloni, Orfeh, Portia, Michael Puzzo, Douglas Sills, and Yul Vázquez with special guests to come.

Billed as "an original evening of music, theatre, and poetry," Obsession "sheds light on a dark topic we all think about...and think about...and think about," according to a release.

Shanley — himself a member of LAByrinth Theatre Company since 2000 — Has previously collaborated with the troupe on his plays Where’s My Money? and A Winter’s Party (both in 2001), Dirty Story (2003), and this season's Sailor’s Song (Fall 2004). He is currently nominated for a Tony Award for his Pulitzer Prize-winning play Doubt.

Tickets to Obsession at the Lucille Lortel Theatre, 121 Christopher Street, are priced at $150 ($125 tax deductible); priority seating at $250 ($225 tax-deductible) are available by calling (212) 513-1082. For more information, visit www.labtheater.org.