New Hampshire’s own John Shea, best known as Lex Luthor in television’s “Lois & Clark,” is making a movie on Nantucket called “Grey Lady.” It’s about a detective who heads to the island to avenge his partner’s death. According to the Theatre Workshop of Nantucket, the movie will be filmed in March and April. Shea is currently casting for leads and extras and will have some local auditions Feb. 12 from 4 to 6 p.m. at Bennett Hall. Roles include Billy MacLeod, a 30-something bachelor artist and scalloper (we’re picturing a Ben Affleck type), and Miss Cash, a woman in her 70s or 80s who runs the Safe Harbor Guest House. Get more information by e-mailing firstname.lastname@example.org.