“Jonathan’s Blaze,” by Christopher Stetson Boal, the final work on the four-play bill, is a well-etched nightmare, with a great performance by P. J. Sosko as a scruffy veteran of the war in Iraq who finds himself confronted by an angry man with a gun, for reasons that become clear only slowly. It may be an old formula for a one-act: start with a life-or-death moment, spend your 20 minutes explaining how it came to be, while the constant threat of a concluding gunshot keeps the tension high. But Mr. Sosko and J. J. Kandel as the jittery gun-wielder play it convincingly.

By NEIL GENZLINGER August 18, 2010