If you don’t know what the movie’s about, you might think it’s just a typical medical drama.

But “The Good Nurse” (starring Jessica Chastain and Eddie Redmayne) is anything but typical.

It’s a breathtaking peek into the horrific real-life story of a night nurse serial killer who killed hundreds of patients by injecting fatal drugs into their IV bags.

In real life, killer Charles Cullen, who could be one of the most prolific serial killers of all time (active for over 16 years), is not the titular “good nurse.”

It’s Jessica Chastain’s character, fellow nurse Amy Loughren, who befriended, suspected, and then brought down Cullen in real life, who’s the good egg.

The movie is gripping, gritty, and horrifying – everything they hoped it would be.

Currently, serial killer movies and dramas are under renewed scrutiny after family members of the victims of killer Jeffrey Dahmer spoke out against a Netflix docuseries detailing the killer’s exploits. But in “The Good Nurse,” director Tobias Lindholm and screenwriter Krysty Wilson-Cairns explain that there’s a story to be told of the people who helped end his reign of terror – rather than glorifying the killer’s actions.

The movie isn’t a direct interpretation of the actual events but is based on a 2013 book by the same name, which details what happened, and the real-life good nurse was involved in the film’s production.

Overall, it’s precisely the movie you want to watch if you want your skin to crawl, enjoy police procedurals, and have a fascination for serial killers. And both Chastain and Redmayne bring their A-game.