The bizarre murder of a world-renowned anthropologist over the Christmas holidays shocks staff and students at the university where she teaches. Police get a clue that a stranger described as a female Hulk was seen shortly before the murder. In a case stranger than fiction, the murderer turns out to be not whom she appears to be.

When a senior citizen is killed on a city street, authorities at first treat it as a typical hit-and-run accident. But as they investigate further, they begin to realize that the culprit is a thrill-seeking psychopath who intends to kill people.

A woman is told by a friend that she was a passenger in a car where she was confronted with a guy's head in a bucket. The woman gets in touch with police. But the story keeps changing and the woman retracts. As police dig deeper, they discover a sordid tale of power and intrigue.