In Agatha Christie’s classic whodunit (adapted from her book), ten strangers unknowingly linked by a chain of dirty secrets gather at an island estate only to find themselves prey to their unseen host. Director Michael Halberstam and ensemble treat us to an elegant revival–a smorgasbord of diverse complex characters who, as their fellow guests are gruesomely eliminated, gradually turn on one another. Brian Bembridge’s set is the ultimate mood enhancer, creating both a sense of irony–how could something so awful happen in this idyllic spot?–and of doom, using chilling storm effects and flickering chandeliers. Though watching trapped rats squirm can grow tiresome, there’s no shortage of amusing distractions here. Through 9/24: Wed 1:30 PM, Thu 1:30 and 8 PM, Fri 8:30 PM, Sat 5 and 8:30 PM, Sun 2:30 and 7 PM, Drury Lane Oakbrook, Roosevelt and Butterfield, Oakbrook Terrace, 630-530-0111, $22-$41.50.