The subject matter was weighty, but spirits were light at the opening night of Rinne Groff’s Compulsion, the stunning story of obsession that bowed off-Broadway on February 17. Tony winner Mandy Patinkin stars as Sid Silver, a Jewish author and journalist who finds himself on a one-man mission to bring the diary of Anne Frank to the world. Patinkin and castmates Hannah Cabell and Matte Osian were joined by family, friends and the Public Theater's best and brightest to celebrate their big night. Click through for photos of this illustrious event and then stop by the Public Theater to see Compulsion for yourself!