Knock Knock appears in an aspect ratio of approximately 2.40:1 on this Blu-ray Disc. The movie came with an appealing presentation.
Sharpness seemed fine. A few slightly soft shots cropped up, but overall, I viewed a tight, distinctive image. No issues with jaggies or moiré effects occurred, and I witnessed no edge haloes. Print flaws failed to mar the presentation.
In terms of colors, Knock went with a green feel; a little orange showed up as well. The hues worked fine within those limitations. Blacks seemed deep enough, and shadows showed good smoothness. I felt pleased by this solid image.
The DTS-HD MA 5.1 soundtrack seemed acceptable but not especially ambitious. It used all the channels to give us music, and appropriate effects cropped up around the spectrum in a convincing manner. The rainstorm that prompts the movie’s action became the element that used the various channels in the most active/involving manner, but a few other minor tidbits popped up from the side and rear speakers.
Audio quality satisfied. Music was rich and warm, while speech came across as natural and distinctive. Effects seemed accurate and dynamic. Nothing about the mix dazzled, but it fit the narrative.
The Blu—ray boasts a few supplements, and we open with an audio commentary from co-writer/director Eli Roth, co-writer Nicolas Lopez and actors Lorenza Izzo and Colleen Camp. All four sit together for a running, screen-specific look at the project’s influences and inspirations, cast and performances, locations and sets, music, visual style, and related subjects. (Actor Aaron Burns also briefly chats via Face Time.)
At times, the commentary offers decent information, but it runs into one major problem: happy talk. Hoo boy, do all involved love this movie! They pour on the praise to such a remarkable degree that actual filmmaking notes often fall by the wayside. We still learn some useful tidbits, but it becomes tough to sit through all the back-patting to get to them.
Two Deleted Scenes follow. We see “Destruction” (3:15) and “Alternate Ending” (1:35). “Destruction” shows more of the rampage conducted by Bel and Genesis, while the “Ending” shows what Evan does after the theatrical version’s finale. The former just rambles, while the latter feels like a goofy twist. Neither one works.
We can view the deleted scenes with or without commentary from Roth. He tells us about the creation of the sequences and lets us know why he cut them. Roth offers some good notes.
The Art of Destruction: The Making of Knock Knock runs 14 minutes, 42 seconds and involves Roth, Izzo, Camp, Lopez, and actors Keanu Reeves and Ana de Armas. We get notes about the film’s origins and development, story/character areas, and the movie’s art. We find a decent array of notes, though many seem redundant after the commentary.
After this we find a Still Gallery. It offers 62 frames that mix shots from the set, promotional images and close-ups of props. This turns into a fairly nice collection.
The disc opens with ads for John Wick, The Last Exorcism, Cabin Fever, and the Saw series. No trailer for Knock Knock appears here.
With a slew of clichés and nary an intelligent moment to be found, Knock Knock delivers a brain-dead thriller. It requires so many leaps of logic to achieve its goals that it seems likely to leave the viewer exasperated. The Blu-ray presents positive picture and audio along with erratic supplements. One of the dumbest movies I’ve seen in a while, Knock Knock flops.