Parasite

In a future not far from ours, Parasite by Mira Grant imagines a world where medicine has taken a radical leap forward. Thanks to genetically engineered tapeworms, humanity is healthier than ever. These living implants, developed by the powerful SymboGen Corporation, regulate immune systems, fight disease, and ensure long lives.

But what happens when the parasites begin to evolve?

Sally “Sal” Mitchell is one of the earliest recipients of the implant. After surviving a near-fatal accident, she owes her life—and memory—to SymboGen. But as Sal begins to question the gaps in her past, strange things start happening. People begin behaving violently, unpredictably... as if something inside them has taken over.

As the truth unfolds, Sal finds herself at the center of a terrifying revelation: the tapeworms may be more than just helpful symbionts—they may have their own consciousness. And they're waking up.

Blending medical science fiction with bio-horror, Parasite is a disturbing and intelligent exploration of identity, control, and what it truly means to be human. Mira Grant raises chilling ethical questions: If your body isn’t entirely yours, who—or what—are you?

Dark, suspenseful, and disturbingly plausible, Parasite is perfect for fans of genetic thrillers, dystopian fiction, and near-future horror that feels just a bit too real.