Triangle Theatre is celebrating 47 years at the Church of the Holy Trinity and is an integral part of the life of the parish. A respected member of the New York theatrical community, Triangle is and one of only a few theatres on the Upper East Side of Manhattan. Since July of 2018 Triangle has been under the leadership of Interim Artistic Director Elowyn Castle, an actor and director. From 2000 to 2018 Triangle was under the leadership of Artistic Director Dudley Stone, an actor and playwright.

The Triangle Board:
Chairman: Reverend John F. Beddingfield
Interim Artistic Director: Elowyn Castle
Co-Artistic Director: Constance George
President: Jean Geater
Treasurer: Inez Lambert

Other Board Members include Andy Achsen, Amelia V. Anderson, Hal Barth and Leona Fredericks.

Our staged readings of classic and contemporary plays, one person shows and cabaret evenings are available to audiences from all over for a small donation. Triangle produces works by establish dramatists and provides opportunities for new playwrights to try out their plays with an audience and for actors to polish their craft.

Over the years we have produced established dramatists including works by Oscar Wilde, Anton Chekhov, George Bernard Shaw, Brian Friel, Lanford Wilson, Romulus Linney and Tina Howe, and A.R. Gurney, among others.

Casts feature both Equity and non-Equity actors. Triangle also offers a monologue and scenes acting class each fall and spring, available to both new actors and those looking to further hone their craft. Triangle welcomes volunteers with office management skills, marketing or public relations experience, as well as those who would occasionally just like to pitch in and help.

For general information, please email us at

For information about past or upcoming productions please contact Jean Geater at

Triangle is a non profit 501(c)3 corporation supported by donations. To make a donation please write checks payable to “Triangle Theatre” and mail to Inez Lambert, Treasurer, Triangle Theatre, 316 East 88th Street, NY, NY 10128-4909.

To the right is a selected list of recent productions:

Triangle Theatre

The Unexpected Guest  by Agatha Christie, presented in 2017

The Unexpected Guest by Agatha Christie, presented in 2017