The show, directed by Dunlop, opened off-Broadway on June 10. In his Broadway.com Review of the play, William Stevenson wrote: "Certainly, there have been countless plays, films and TV movies set against the backdrop of Hitler's rise to power. But Address Unknown presents the period through a different perspective: the deteriorating friendship of a Jew and a German. The problem is that the whole play consists of letters between the two men, which is limiting for the actors. The two never get to interact and confront one another, except through these letters. Fortunately, Dunlop allows each actor to cross over to the other man's side of the stage, which keeps the play from becoming static. Still, it's too bad that there is never any direct contact between them. Fortunately, Dale and Atherton make the 80-minute two-hander compelling anyway."
A production spokesperson could not confirm a closing date for Address Unknown.