A Deadly Night at the TheatreMURDER IS WAITING IN THE WINGS . . . Actresses Posy Starling and Caro Hooper both gained a name for themselves playing fictional detective Dahlia Lively on screen, but now they are back treading the boards in London's theatre district, starring in two very different plays. Their fellow Dahlia, Rosalind King, is in the city to catch their opening weeks, but she can't help but notice some tensions between Posy and Caro. Perhaps because of Caro's new