The "Serial Killer's Apprentice" episode 2 airs tonight on Investigation Discovery. Find out how to watch for free as ...

Here, we have ranked 15 essential serial killer films that shaped the genre and redefined crime, fear, and obsession as they echo in the dark corners of pop culture.

Starring Yellowstone actress Hassie Harrison and Suicide Squad 's Jai Courtney, the film, titled Dangerous Animals, follows the abduction of a free-spirited surfer by a shark-obsessed serial killer.