"Origin" is a thriller novel by American author Dan Brown, published in 2017. It's the fifth book in Brown's Robert Langdon series, following "Angels & Demons", "The Da Vinci Code", "The Lost Symbol", and "Inferno".
The story takes place in Spain and revolves around the mysterious death of a former student of symbologist Robert Langdon. Langdon teams up with the victim's daughter, a brilliant scientist, to unravel the mystery, which leads them to explore the origins of humanity and the future of the world.
As with Brown's other books, "Origin" combines history, art, architecture, science, and suspense, taking readers on a thrilling adventure through Barcelona, Madrid, and other Spanish cities.