<P>One of the most famous and beloved mysteries from The Queen of Suspense Agatha Christie now a Lifetime TV movie.<P>"Ten . . ."Ten strangers are lured to an isolated island mansion off the Devon coast by a mysterious "U. N. Owen."<P>"Nine . . ."At dinner a recorded message accuses each of them in turn of having a guilty secret, and by the end of the night one of the guests is dead.<P>"Eight . . ."Stranded by a violent storm, and haunted by a nursery rhyme counting down one by one . . . as one by one . . . they begin to die.<P>"Seven . . ."Which among them is the killer and will any of them survive?"