The book (titled "Three Bags Full: A Sheep Detective Story") was authored by Leonie Swann. Leonie Swann's debut novel was published back in 2005, in Germany. The book earned the author Glauser Prize for crime fiction. Craig Mazin will write the screenplay. Lindsay Doran, Tim Bevan, and Eric Fellner are all producing the feature. Phil Lord, Chris Miller, Aditya Sood, and Tim Wellspring are executive producers as well. The movie is scheduled for a worldwide theatrical release on February 20, 2026.
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Here is the goodreads synopsis of Three Bags Full: A Sheep Detective Story:
A witty philosophical murder mystery with a charming twist: the crack detectives are sheep determined to discover who killed their beloved shepherd.
On a hillside near the cozy Irish village of Glennkill, a flock of sheep gathers around their shepherd, George, whose body lies pinned to the ground with a spade. George has cared devotedly for the flock, even reading them books every night. Led by Miss Maple, the smartest sheep in Glennkill (and possibly the world), they set out to find George’s killer.
The A-team of investigators includes Othello, the “bad-boy” black ram; Mopple the Whale, a Merino who eats a lot and remembers everything; and Zora, a pensive black-faced ewe with a weakness for abysses. Joined by other members of the richly talented flock, they engage in nightlong discussions about the crime, wild metaphysical speculations, and embark on reconnaissance missions into the village, where they encounter some likely suspects. Along the way, the sheep confront their own all-too-human struggles with guilt, misdeeds, and unrequited love.
Funny, fresh, and endearing, it introduces a wonderful new breed of detectives to the reader.
Source: Deadline