即将拆除的塔楼，只剩下最后15位住户了。一个神秘狙击手nicktime和他的高动力、低噪音步枪，逐个瞄准枪击他们。没人听到枪声，没有任何外来帮助。如果受惊的受害者不能找到这个迷宫般塔楼的逃生之路，他们都将被一个接一个地枪杀。

　　Tasha Robson, 16, has run away from home! While she rides the waves aboard the large ferry heading from South Shields, England to Scandinavia in search of her unknown father, "The Viking" all is less than calm in the Robson household.

　　BBC和BritBox将制作《天堂岛疑云》的衍生剧《天堂岛之外》。