1 of 6 volumes. With an essay "Martin's Mysteries" by the writer of Martin Mystery, Alfredo Castelli, and "A Short History of Bonelli Comics."
From the publisher:
Martin Mystery, the Detective of the Impossible has made a discovery off the coast of the Azores. A sunken port may point to the lost civilization of Atlantis.
Unfortunately for Martin, strange men dressed all in black don't want his discovery made public and they're willing to kill in order to keep it a secret. You can be sure that this is one mystery that Martin won't turn away from. Make sure to check out this first American issue of Martin Mystery featuring a cover by Dave Gibbons.