Rehearsals are underway for “Seven Keys to Baldpate Inn,” a serious comedy thriller, adapted by Paul Thain. Directed by Suzzune Husting, the play’s plot revolves around a bet to write a novel in 24 hours, with political intrigue, bribery, blackmail and a missing $1 million. On March 27, the show is at 3 p.m. All other shows are at 7 p.m. Keep an eye out for tickets at www.acworthculturalarts.org.