Photo by Flickr user nevermindtheend

CAMP: The Washington Improv Theater begins its month-long “Summer Camp” tonight. It features four performances, including the “improvised slasher movie Die! Die! Die!” Source (1835 14th Street NW) 7:30 p.m. $12-15

FRINGE: The Capital Fringe Festival returns for its eleventh year. A full schedule of performances can be found here. $17 per performance.

POSSIBILITIES: Author Helen Phillips discusses Some Possible Solutions, an “idiosyncratic series of “What ifs.” For example, “What if your city was filled with doppelgangers of you?” Third Floor (4200 9th Street NW) 7-8:30 p.m. Free