"The House with a Clock in Its Walls" is a 2018 fantasy film directed by Eli Roth, based on the 1973 novel by John Bellairs. The story follows a young boy named Lewis Barnavelt, who moves in with his eccentric uncle, Jonathan Barnavelt, in a mysterious house filled with magical secrets. Lewis discovers that the house has a hidden clock that ticks down to a catastrophic event. As Lewis learns about magic and the supernatural, he teams up with his uncle and their neighbor, Florence Zimmerman, to uncover the clock's purpose. The film blends elements of adventure and horror, appealing to both children and adults with its whimsical yet spooky atmosphere.