In the interactive comedy, “Convent Bingo,” Mrs. Mary O’Brien has returned to the convent and is ready to raise money for the nuns in her former order. During a performance to benefit Mount Hope Farms Saturday, audience members will get a light-hearted lesson on the seven deadly sins of bad behavior, some wacky prizes, bingo cards and classic Catholic humor. The evening also includes raffles for tickets to upcoming local events and for a two-night stay at the historic Governor Bradford House.