曾经患有精神病的女作家在镇里看到了恶魔和狼人。开始她以为这只是她的幻觉。但当她意识到它们都是真实的时候，她开始怀疑这个奇怪的小镇，然而，这些东西却神秘地消失了。而这究竟又是怎么一回事呢……

一群男女来到五百年前的城堡观光，接着三个人离奇失踪，剩下的人发现城堡的机关能通往一个迷宫密道，然后他们下去搜寻，却一个挨一个死去，而城堡的伯爵似乎有所秘密隐藏，于是他们开始互相猜忌，到底是狼人的诅咒还是人为。

A number of vicious murders occur in a small California town after a motorcycle-riding stranger arrives. The gruesome slayings look disturbingly like the work of a werewolf. Meanwhile, in another nearby town, police are hot on the trail of a killer they believe is a werewolf.

When a young journalist dies in violent circumstances, her brother soon learns, by way of the mysterious Stefan Crosscoe, that his sister has succumbed to the werewolf curse.