In a London train station, two strangers collide….and so begins this new play by Simon Stephens starring Denis Arndt and Mary-Louise Parker.

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Amidst the bustle of a crowded London train station, Georgie (Mary-Louise Parker) spots Alex (Denis Arndt), a much older man, and plants a kiss on his neck. This electric encounter thrusts these two strangers into a fascinating and life-changing game. Simon Stephens’s play brings to blazing, theatrical life the uncertain and often comical sparring match that is human connection.


  • Playwright Simon Stephens is the winner of the 2015 Tony Award for Best Play as the author of The Curious Incident of the Dog in the Night-Time. Mary-Louise Parker won a Tony Award in 2001 for her leading role in David Auburn’s play Proof, also at Manhattan Theatre Club.
  • The play’s title invokes the renowned German physicist Werner Heisenberg (1901-1976), famous for his Uncertainty Principle which states that you can never simultaneously know both the exact position and the exact speed of an object.


Heisenberg was commissioned by Manhattan Theatre Club and was first performed in the company’s Off Broadway venue in the spring of 2015, before moving to MTC’s Broadway venue.


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