Genius and madness.  How genetic are these traits?  Robert, a genius mathematician sidetracked by mental illness has just died.  His caretaker and daughter, Catherine, is at loose ends with his loss and seems to have inherited his mental instability.  Robert’s student finds a proof, but when was it written? And by whom?

Proof: Online Program
Printable PDF Version of Program (10 pages)

Proof on 6ABC Loves the Arts

“Not to be missed.” Ginger Agnew B Sharp Productions

Read the full review

Review from Ellen Dilks

by David Auburn

Sept 16,17 @8pm, 18 @ 2pm
Sept 22,23 @ 8pm, 24 @ 2&8pm
Sept 29,30 @8pm, Oct 1 @ 2&8pm
Directed by: Becky Fleckner

The Cast


Elsa Kegelman


Katie Frazer


Jed Krivisky


Bob Weick


Your donation will help us to continue our high standards of theatrical production and to maintain our historic buildings.


Auditions are by appointment only.


Stagecrafters currently stages five theatrical productions per season, which encompass a wide range of styles, from classics to edgy contemporary fare.

Directions & Parking

Stagecrafters Map

Plan Your Visit

The Stagecrafters Theater is centrally located in Chestnut Hill, in the heart of this historic section of northwest Philadelphia at 8130-34 Germantown Avenue (in the 8100 block between Hartwell Lane and Abington Avenue). The theater is toward the rear of the property up a short driveway. More

8130 Germantown Ave., Philadelphia PA 19118
Questions: 215.247.8881 • Reservations: 215.247.9913