Hot off this past spring's smash run of Based on a Totally True Story at Manhattan Theatre Club, rising young playwright Roberto Aguirre-Sacasa launches Dark Matters at Rattlestick. In a house at the end of a cornfield, something almost beyond belief is happening to the Cleary family. A woman disappears, then returns talking of otherworldly beings. Is she lying? Or are even darker forces at work, threatening to destroy a family already on the brink of falling apart?