The film stars Kevin Bacon, Radha Mitchell, David Mazouz, Lucy Fry, Matt Walsh, Jennifer Morrison, Ming-Na Wen and Parker Mack.

The film is about a family who visits the Grand Canyon and brings home a supernatural force that feeds off their fears and takes over their lives.

[5] Peter and Bronny Taylor go on a vacation to the Grand Canyon in Arizona with Stephanie, their bulimic teenage daughter, Mikey, their adolescent autistic son, and another family, the Carters.

At home, Bronny searches online for answers to the strange activity and learns about the Anasazi Indians, who believed that demons were bound to rocks hidden in caves.

The demons connect to young children who are dragged into their world, triggering an event known as 'The Darkness.'

Bronny and Peter later find Mikey covered in black marks from a fire in his room, blood pouring from his mouth.

As they cleanse the house, Teresa and Gloria go into Mikey's room and note that this is where the real evil lives.

[8] Trian Long-Smith also joined the film on the same day, to play Sammy Levin, the savvy, bright and flirtatious intern working for Peter Taylor’s character.

[12] On May 14, Jennifer Morrison was added to the cast to play Joy Carter, Gary's wife and also a mother of a child.

[citation needed] The film was shot with the camera Arri Alexa Plus 4:3, as revealed by cinematographer Toby Oliver.

The site's consensus reads, "The Darkness clumsily relies on an assortment of genre tropes, leaving only the decidedly non-frightening ghost of superior horror films in its wake.