黄石国家公园(Yellowstone National Park)拥有众多的景观和种类繁多的动物,聚集在一个引人入胜的生态系统中。该地区曾经有19000多只麋鹿,但在过去的20年中,其数量猛跌了80%。神秘的下降引发了许多问题,研究人员正在争相提供答案。与他们一起研究从狼到熊到树木再到鳟鱼的一系列理论和犯罪嫌疑人,以解决这个令人震惊的难题。。When Watson reads from the newspaper there have been two similar murders near Whitechapel in a few days, Sherlock Holmes' sharp deductive is immediately stimulated to start its merciless method of elimination after observation of every apparently meaningless detail. He guesses right the victims must be street whores, and doesn't need long to work his way trough a pawn shop, an ...。