Roundabout Theatre Company’s revival of The Mystery of Edwin Drood is a starry Broadway affair that invites audiences to interact with the actors of the show-within-a-show, even allowing the crowd to vote for the musical’s ending! A slew of stars signed up to do some sleuthing on opening night at Studio 54—and, of course, to lend some shiny support to the Broadway cast, which includes Chita Rivera, Stephanie J. Block, Will Chase, Gregg Edelman and Jim Norton. Click through our gallery for complete coverage of all the big names who showed up for a night of madcap musical mystery!