Johnston ("3rd Rock from the Sun," The Women) and Weber ("Jeffrey," "Wings") are joined by Hugo Armstrong (Waiting for Godot) and Missy Yager ("Mad Men," "The Newsroom") for the production that will run through Dec. 9. Bart DeLorenzo directs.

All LATW performances are recorded and broadcast on LATW's nationally syndicated radio theatre series, "The Play's the Thing."

Here's how it's billed: "In a Fire Island beach house, a brother and sister and their respective spouses gather to celebrate the Fourth of July. With food, cocktails, fireworks and stinging barbs, they fortify themselves against their individual anxieties—and their gay neighbors partying in the houses on either side."