The face in the shadows

"You'd better stay away from me," the little girl whispered to Ellen Stacey, "or they'll get you like they did Amy. She was my friend. So they killed her." The little girl's voice held such hushed horror that Ellen felt a chill of fear. Who were they? Did the dazed child have real enemies, or were they the shadowy figures of her imagination? The young actress had found Cecily Vandering huddled on the terrace of the Cloisters Museum, half-unconscious from drugs. She wore the uniform of one of New York's most exclusive schools and in her bag were identification cards with a Fifth Avenue ad…