This book is part of an original full-length suspense series. In early winter, after a heavy snowfall, a young woman is murdered, her body hung from a tree in a park, her heart ripped out. Before the police can find any clues, a second victim, also a young woman in her thirties, is found dead in the same manner. The killer acts ostentatiously, deliberately writing the numbers "5, 4" in the victims' blood at the scene, using a countdown to attract the police's attention. Clearly, this is a serial murder case with a strong undertone of revenge, yet the investigation reveals that the two victims had almost no connection in their social lives. Two crucial questions plague the police: who is their common enemy, and why did the cautious killer leave behind the countdown in blood?
本书为原创长篇“悬疑系列”作品之一。初冬，一场大雪过后，一位年轻女人遇害，人被挂在公园的树上，心脏被人挖走。警方还没找到任何头绪，第二名被害人以同样方式惨死，她也是一位三十岁左右的年轻女性。凶手行事高调，故意在现场用被害人鲜血写下数字，“5、4”，用倒数的方式引起警方的关注。显然，这是一起带有强烈「复仇」意味的连环杀人案，可是经过调查，这两个受害者的社会关系几乎没有任何交集。两个重要问题困扰着警方：究竟他们共同的仇人是谁，以及谨慎的凶手为什么留下倒数血字？
本书为原创长篇“悬疑系列”作品之一。初冬，一场大雪过后，一位年轻女人遇害，人被挂在公园的树上，心脏被人挖走。警方还没找到任何头绪，第二名被害人以同样方式惨死，她也是一位三十岁左右的年轻女性。凶手行事高调，故意在现场用被害人鲜血写下数字，“5、4”，用倒数的方式引起警方的关注。显然，这是一起带有强烈「复仇」意味的连环杀人案，可是经过调查，这两个受害者的社会关系几乎没有任何交集。两个重要问题困扰着警方：究竟他们共同的仇人是谁，以及谨慎的凶手为什么留下倒数血字？
