Which Harry Potter book was adapted into two films?

Harry Potter and the Deathly Hallows was the Harry Potter book adapted into two films.

The final novel was published in 2007 and was divided for cinema into Harry Potter and the Deathly Hallows – Part 1 and Part 2. Part 1 was released in 2010, while Part 2 followed in 2011. Together, the two films conclude the main Harry Potter film story.

The decision to split the final book allowed the filmmakers to include more of its plot. The story follows Harry, Ron, and Hermione as they search for Horcruxes outside Hogwarts, leading to the Battle of Hogwarts and Harry’s final confrontation with Voldemort.

The split produced eight films from seven novels. The first six books each received one film, while the length and narrative scope of the seventh book led to the two-part adaptation.