[4][5][6] The film is based on David Reichert's book, Chasing the Devil: My Twenty-Year Quest to Capture the Green River Killer.

[1][2] The film's biggest departure from the book is a fictional inclusion of two teenage girls, one of whom, Helen "Hel" Remus, is a young runaway who decides to turn to prostitution to escape her mother's abusive boyfriend, in a sympathetic storyline to honor Ridgway's [who?]

[1] The main music theme is taken out of the symphonic poem From Bohemia's Fields and Meadows (Z českých luhů a hájů).

It is the fourth part of a set of six symphonic poems Má vlast (My Homeland) by Czech composer Bedřich Smetana.

[citation needed] Barry Garon of The Hollywood Reporter wrote, "Using dark colors and jarring images, director Norma Bailey tries to infuse the work with suspense and mystery.