Il Giallo Mondadori is an Italian series of mystery/crime novels published by Arnoldo Mondadori Editore since 1929.[1]
Their original title was I libri gialli, where giallo in Italian means "yellow", a reference to the color of the cover background.[2] The title was changed to I gialli Mondadori in 1946. The series had a weekly periodicity for decades, while currently is published every fifteen days.
In its long life, the series spawned several companion series, the most successful being I classici del Giallo, which is still ongoing and publishes reprints.