A shapeshifting private detective is hired for a missing person case that quickly escalates into a city-wide conspiracy involving Lovecraftian horrors. Twila Matthews, a down-on-her-luck private investigator with a demonically possessed cell phone, takes on a seemingly simple case. However, the discovery of her target's corpse plunges her and her associates into the city's darkest corners, forcing a confrontation with unimaginable evils that lurk beneath the mundane. The narrative unfolds through Twila's perspective as she navigates a world where the monstrous and the mundane coexist.

The premise of Night Shall Overtake suggests a gritty, character-driven urban fantasy that leans heavily into horror elements. The inclusion of Lovecraftian themes and a shapeshifting protagonist points to a narrative that explores the darker aspects of the supernatural within a contemporary urban setting. The mention of a possessed cell phone and creatures holding day jobs indicates a unique, perhaps darkly humorous, take on the genre. The provided quote from Joe Flynn suggests a positive reception within the horror community, highlighting Michael Collins' talent.