Dangerous secrets score high at an exclusive girl's school . . . but top marks belong to murder. Actress Tessa Crichton has mixed reactions to being on the panel of judges at the annual inter-house competition of the Waterside Drama and Ballet School, her alma mater. When she arrives on campus, the headmistress is having an affair with the founder's husband, a kleptomaniac is on the loose among the budding thespians, and the beloved and bewildering...