Photos: Megan Mullally, Nick Offerman Rehearse for New Musical ICEBOY!

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See Mulally and Offerman in rehearsals alongside Grey Henson, Sarah Stiles and more.

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Rehearsals are underway for the musical event of the summer: Iceboy! Or, The Completely Untrue Story of How Eugene O‘Neill Came to Write The Iceman Cometh. See photos here!

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With music by Mark Hollmann, lyrics by Mark Hollmann and Jay Reiss, and book by Erin Quinn Purcell and Jay Reiss, the world-premiere production is at once the capstone to The Goodman’s Centennial Season and its latest in a longtime history of premiering new large-scale American musicals. Marc Bruni directs with choreography by JoAnn M. Hunter. Iceboy! Or The Completely Untrue Story of How Eugene O’Neill Came to Write The Iceman Cometh appears in the 856-seat Albert Theatre June 20 – July 26.

Broadway’s brightest star of 1938, Vera Vimm (Megan Mullally), is at the top of her game. But when she adopts a 40,000-year-old Neanderthal discovered frozen in the Arctic, the spotlight begins to shift. As Iceboy (Grey Henson) thaws, he unexpectedly becomes a theatrical sensation, inspiring the “father of the American drama” Eugene O’Neill (Nick Offerman) and challenging his legendary mother for center stage. It’s All About Eve...if only Eve was a caveman.

The cast stars Emmy Award winners Megan Mullally and Nick Offerman, Tony Award nominee Grey Henson, Cedric Yarbrough, Tony Award nominee Sarah Stiles, and Alex Goodrich, together with Donterrio, Melanie Brezill, Will Koski, Linda Mugleston, Shawn Pfautsch, Andrea San Miguel, Will Lidke, Leah Morrow, and Jeff Parker.

Casting note: Shawn Pfautsch will appear as Eugene O’Neill, the role typically played by Nick Offerman, at the June 20, 21, 23, and 24 preview performances.

Photo credit: Todd Rosenberg

Mark Hollmann , JoAnn M. Hunter, Erin Quinn Purcell , Jay Reiss , Marc Bruni

Nick Offerman , Megan Mullally

Alex Goodrich , Sarah Stiles , Cedric Yarbrough, Megan Mullally , Nick Offerman , Grey Henson

Grey Henson , Megan Mullally , Nick Offerman , Cedric Yarbrough

Jay Reiss , Sarah Stiles

Andrea San Miguel , Shawn Pfautsch , Linda Mugleston

Cedric Yarbrough, Alex Goodrich , Donterrio

Kiera Fromm, Marc Bruni

Vadim Feichtner

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_Originally reported by [BroadwayWorld](https://www.broadwayworld.com/chicago/article/Photos-Megan-Mullally-Nick-Offerman-and-More-in-ICEBOY-Rehearsals-20260528)._