My friend Larry Green has been cast in “And Then There Were None” at the Metro, a classic Agatha Christie mystery – but they’re one actor short and in urgent need of someone to fill the role. It could be your big chance! Here’s what’s needed: ARMSTRONG is a fussy, good-looking english doctor of 44, confident but with a dark secret. the director Alison Schamberger is flexible on the age [and the looks], but an English accent is a MUST. Show dates: Sat. May 8 – Sat. June 5, Wed. – Sat. nights, 2 Sunday matinees and one Tuesday night. Rehearsals start March 18: Tuesday/Thursday nights, Sunday afternoons, plus 5 or 6 nights in a row before the opening. Contact Alison at firstname.lastname@example.org. Metro’s website is metrotheatre.org.