Donald Duck & Co #45/1967

In "Dokki Sakki i Sydhavet," Skrue’s new electronic safe door, triggered only by a specific flute tune, becomes the target of a mysterious phantom haunting Notre Duck Cathedral in Andeby. With the flute stolen from the church’s hidden well, the phantom sets the ducks and the boys on a series of perilous trials—each more baffling than the last. Written by Carl Barks and Vivi Aagaard, and illustrated by Carl Barks with inks by Barks, this 1967 Egmont classic blends clever puzzles and classic duck-sized chaos, all under a cover by Carl Barks.