Books like Parasite by Darcy Coates

Nothing, in all it's entirety.

Genetically engineered tapeworms that safeguard humanity, enhance immunity, and produce designer drugs suddenly seek freedom from their hosts.

Everyone knows about Ashburn House. They whisper its old owner went mad, and restless ghosts still walk the halls. They say it's the dwelling place of something cruel and sinister. But when Adrienne―desperate and in need of a place to stay―inherits the crumbling old mansion, she only sees it as a lifeline... until darkness falls. Strange messages are etched into the walls. Furniture moves when she leaves the room. There's something here―something powerful, angry, and hell-bent on shaking things up. Worse, a grave hidden in the depths of the forest hints at a terrible, unforgivable secret. Eventually Adrienne can't ignore that a twisted thing lives in the house, its hungry eyes ever-watchful. Chasing the threads of a decades-old mystery, it isn't long before she realizes she's become prey to something deeply unnatural and intensely resentful. She has no idea how to escape. She has no idea how to survive. Only one thing is certain: Ashburn's dead are not at rest.

A coming‑of‑age tale that follows teenage girls as they form bonds over shared love for books in a library setting, weaving in themes of friendship, English literature, and the lives of widowers.

Three siblings—Maria, Niall, and Celia—grow up under the shadow of their famous parents, a singer and a dancer, while navigating creative ambitions and family secrets in a setting of artistic intrigue.