When Norman Graysmith is invited into the home of an aspiring serial killer, Aidan Mendle to be exact, he believes he has the subject for a career-defining documentary. However, the documentary crew soon learns of a few crucial issues with the production. Notably, the professed murderer has yet to take a life. Under the limelight, and with expectations of being able to perform, events quickly spiral out of control as more people get sucked into the world of the would-be serial killer.

Opening up with a gag that perfectly lands as an initial success, a dryly delivered groaner, it is clear audiences will be in for a treat most optimistically. From there, the comedic brilliance only deepens as the core characters develop into an eccentric ensemble, widening the scope of this mockumentary into more amusing directions. Unequivocally, every character is charming in their own peculiar ways, imbuing the story with a gleeful playfulness throughout – outwardly funny yet subtly smart. Evoking the best of British absurdist humor, When the Screaming Starts is certain to deliver plenty of ‘laugh-out-loud’ moments as familiarity with the oddball crew leads to a mix of meticulous comedy planning and sporadic improvisation.
While indeed a comedy, the production is not afraid to indulge in darker themes. If anything, its embrace of the macabre allows the film to subvert comedic leaning into many surprising twists. For a debut feature, director Conor Boru showcases a strong understanding of comedic storytelling which escapes even more experienced filmmakers in the genre.

However effective the comedy lands, there is a greater showcase in narrative storytelling on display here, ensuring the script resonates on a deeper level as commentary. For example, the manner in which idolization of dangerous personas is reflected and how people twist such wickedness into a form of entertainment – favoring idealized sensationalism over the grim truth underlying their actions. Exploring the paradoxical pathos, such as the aforementioned pop culture idolization of serial killers, and how it affects people from both sides of the camera When The Screaming Starts generates thoughtful discourse on the matter. Undeniably, comedy is a perfect medium to lightly share hard truths, and this film has a lot to say beneath the more superficial laughter. Ultimately, by playing the fool, the production is able to explore modern obsessions – the desire to belong and how the media often makes everything worse.
When the Screaming Starts is certainly praiseworthy – think The Rise of Leslie Vernon collides with Hot Fuzz to get a sense of what you are in for. Additionally, the darker themes are ever present and allow for a deeper experience for those more discerning viewers. Essentially, When the Screaming Starts is witty, worryingly accurate, and a riotous experience – it may be the breakout comedic gem of the year.

We watched When The Screaming Starts as part of our Grimmfest coverage

More Festival Coverage
Missing Child Videotape is a 2024 Japanese supernatural horror film written and directed by Ryota Kondo with additional writing from Suzuyuki Kaneko. Known for directing the short films Akai tegata… In the middle of a pandemic, times are hard for Eula Baek and the restaurant she inherited from her grandfather. A plan to get some rare truffles to help raise… There are movies that are sometimes too much even for the seasoned horror fan – for the 2012 version of myself, one such movie was the remake of William Lustig’s… When the first V/H/S film was initially released in 2012, its impact on the horror community was immediately felt, creating shocking scenarios presented in intimate detail through the found footage… Holy Shit! (Holy Crap!/Ach du Scheisse!) is a 2022 German comedy thriller, written and directed by Lucas Rinker in his first feature-length work. As architect Frank awakens from unconsciousness, he… Almost entirely free of dialogue, Looky-loo (2025) gives viewers the view from a killer’s own eyes as he stalks and plans multiple murders. The nameless killer, gains confidence with each…Missing Child Videotape (2024) Film Review – Deafening Silence [Nippon Connection 2025]
Peppergrass (2021) Film Review – Truffles To Die For
Night Caller (2021) Film Review – Meet the New Maniac
V/H/S/94 (2021) Film Review – Found Footage Series Back With Vengeance
Holy Shit! (2022) Film Review – Porta Potty Pandemonium
Looky-loo (2025) Film Review – Through the Eyes of A Killer [Unnamed Footage Festival 7]

Luke Greensmith is an Editor at the Grimoire of Horror and an active folklorist as well as working in film across a few roles. While this can cover quite a wide range of things, he’s a dedicated horror fan at heart and pretty involved with horror communities both online and local to him. You can find their folklore work on the Ghost Story Guys Podcast, their own LukeLore podcast, and accompanying the artist Wanda Fraser’s Dark Arts series as well as on the Grimoire of Horror itself.