Proof Winner of the 2001 Tony Award for Best Play and Winner of the Pulitzer Prize for Drama. On the eve of her twenty-fifth birthday, Catherine, a troubled young woman, has spent years caring for her brilliant but unstable father, a famous mathematician. Now, following his death, she must deal with her own volatile emotions; the arrival of her estranged sister, Claire; and the attentions of Hal, a former student of her father’s who hopes to find valuable work in the 103 notebooks that her father left behind. Over the long weekend that follows, a burgeoning romance and the discovery of a mysterious notebook draw Catherine into the most difficult problem of all: How much of her father’s madness - or genius - will she inherit? Mainstage Drama Runtime: 150 minutes. 15 Minute Intermission Admission: $26.00 + Fees Performances: Friday, May 9, 2025, 7:30pm Cast: ROBERT - Michael Chobanoff Production Team: Directed by: Naomi Tiefel PROOF is presented by special arrangement with Broadway Licensing, LLC, servicing the Dramatists Play Service collection. (dramatists.com)
By David Auburn
Rating: PG-13+
Audience advisory: Play covers heavy emotional topics dealing with mental illness, grief, and the pressure of academic achievement.
Saturday, May 10, 2025, 7:30pm
Sunday, May 11, 2025, 2:00pm
Thursday, May 15, 2025, 7:30pm
Friday, May 16, 2025, 7:30pm
Saturday, May 17, 2025, 7:30pm
Sunday, May 18, 2025, 2:00pm
Thursday, May 22, 2025, 7:30pm
Friday, May 23, 2025, 7:30pm
CATHERINE - Anna Gumberg
HAL - Keenan Ellis
CLAIRE - Ariel Korducki
Stage Manager: Angie Rodenkirch
Production Manager: Breanne Brennan
Costume Design: Beck Men
Lake Country Playhouse is at 221 E. Capitol Drive, Hartland, WI.
Jekyll & Hyde, The Musical (3/28/25-4/13/25)
Poetry Night at Tabi’s Wine Bar: An Evening of Words & Wine (3/14/25-3/14/25)
The Dining Room (1/24/25-2/9/25)
A Christmas Carol (11/29/24-12/15/24)
The Outsider (9/20/24-10/6/24)
An Evening of Poetry with Sara Sarna and Robert Hurd (9/13/24-9/13/24)
Aura (8/24/24-8/25/24)
The Hatmaker's Wife (8/22/24-8/23/24)
Night Sky (8/16/24-8/17/24)
Jane Eyre, the Musical (7/5/24-7/21/24)
Videos
A Funny Thing Happened on the Way to the Forum with Nathan Lane (1996)
Chicago the Musical Appreciation Thread
LITTLE BEAR RIDGE ROAD Previews
Monte Cristo Musical to premiere at Off-Broadway's York Theatre Spring 2026
![]() |
Holiday Inn
Bombshell Theatre (12/4 - 12/21) HOLIDAY SHOW | |
|
& Juliet
Uihlein Hall at Marcus Center For The Performing Arts (6/9 - 6/14) | |
|
Mrs. Christie
Milwaukee Repertory Theater (4/14 - 5/10) | |
|
AUDITIONS - Nana's Naughty Knickers
Sunset Playhouse (12/15 - 12/16) | |
|
Kimberly Akimbo
Uihlein Hall at Marcus Center For The Performing Arts (2/17 - 2/22) | |
|
Chitty Chitty Bang Bang
Racine Theatre Guild (12/12 - 12/21) | |
|
It’s A Wonderful Life: A Live Radio Play
Milwaukee Repertory Theater (10/31 - 12/21) | |
|
All Shook Up, Jr.
Sunset Playhouse (5/11 - 5/12) | |
| VIEW SHOWS ADD A SHOW | ||