Happenstance Theater's Halloween inspired Cabaret Macabre features melodramatic music played live and performances by local actors including Mark Jaster, Sabrina Mandell, Esther Williamson and Gwen Grastorf. Think Edward Gorey and Victorian nightmares. To Nov. 12. Round House Theatre-Silver Spring, 8641 Colesville Road, Silver Spring. Tickets are $15. Call 240-644-1100 or visit roundhousetheatre.org.