This high-strung, gothic tragicomedy by Irish writer Enda Walsh is trapped in a tiny, greasy London apartment where a shut-in father (played by Peter Crook with bipolar glints of mad glee and deep despair) keeps his two adult sons hostage and brainwashed. Every day, they are forced to perform a perverse play with a whirlwind of characters about how great the father is and a revisionist-history version of why he had to flee Cork. Their claustrophobic lives and self-deceptions are a bitter cocktail of hilarious and pathetic, but things get even worse when someone knocks on the door and interrupts their mad ritual. (New Century Theater Company at New City Theater, 1404 18th Ave, wearenctc.org, 8 pm, $30)