Green's wife reacts skeptically, but he reworks his documentary to focus on Dekker and his efforts to expose the monsters' underground home, which he calls "The Marrow".

Tony Todd, Steve Agee, Joe Lynch, Lloyd Kaufman, Don Coscarelli, Corri English, Oderus Urungus, Laura Ortiz, Evan Dickson, and Steven Barton all cameo as themselves.

The initial concept for the film came from fan mail sent by Alex Pardee that purported to tell the true history of a character Green had created, Victor Crowley.

Though Wise's casting was initially controversial among people to whom Green showed a work print, they came around to his point of view when he explained the reasoning.

[3] When writing the script, Green wanted to make sure that the in-jokes did not impact on the enjoyment of general audiences unfamiliar with his work.

[2] Green suffered two major setbacks during filming: the death of his friend Dave Brockie, and his divorce from Rileah Vanderbilt.

[6] Green said there were no ego issues involved in the process, and Pardee and Aronowitz still enjoy collaborating in their spare time for fun.

In order to avoid these poor deals and issues with distributors who claim to have not made any money, they decided to handle everything themselves.

[13] Frank Scheck of The Hollywood Reporter called it "a playfully self-reflexive exercise whose endless in-jokes will best be appreciated by only the most ardent genre aficionados".

[14] Maitland McDonagh of Film Journal International wrote, "A meta-variation on Clive Barker's Nightbreed, Digging Up the Marrow tackles all the same questions–what makes a monster, are they good or bad, et al.—with considerably less grace and intelligence.

[16] Nick Schager of The Village Voice wrote that after poking fun at found footage films, it becomes "the very dull, clichéd thing it mocks.

[19] Simon Abrams of RogerEbert.com rated it 1.5/4 stars and wrote, "Digging Up the Marrow is a decent idea, but beyond some fun creature effects, and a surprisingly grounded performance from character actor Ray Wise, the film just sits there.

[21] Matt Donato of We Got This Covered rated it 3.5/5 stars and called it "a tense, confident, and gorgeously terrifying monster movie that turns Alex Pardee's artistry into vibrant, eye-catching horrors.

"[22] Mike D'Angelo of The Dissolve rated it 3/5 stars and called it "more of an affectionate comedy than a horror movie, despite a third act that features some tense moments and hostile critters.

"[23] Patrick Cooper of Bloody Disgusting rated it 2/5 stars and wrote that the film "can be very fun at times, but overall Digging Up the Marrow is a tiresome and exasperatingly self-aggrandizing trip.