Portugal, it seems, was the first country, worlwide, who saw the newest adventure of Blake & Mortimer being released to the public - the 24th of past month of March.Here's the cover of the Portuguese Edition:

Volumes published in the Blake and Mortimer series:

1950 - Le Secret de l'Espadon, Tome 1 (The Secret of The Swordfish Volume 1: Ruthless Pursuit) ISBN 2-87097-002-1
1953 - Le Secret de l'Espadon, Tome 2 (The Secret of The Swordfish Volume 2: Mortimer's Escape) ISBN 2-87097-004-8
1953 - Le Secret de l'Espadon, Tome 3 (The Secret of The Swordfish Volume 3: SX1 Counterattacks) ISBN 2-87097-005-6
1954 - Le Mystère de la Grande Pyramide, Tome 1 (The Mystery of the Great Pyramid, Volume 1: Manetho's Papyrus) ISBN 2-87097-008-0
1955 - Le Mystère de la Grande Pyramide, Tome 2 (The Mystery of the Great Pyramid Volume 2: The Chamber of Horus) ISBN 2-87097-009-9
1956 - La Marque Jaune (The Yellow "M") ISBN 2-87097-010-2
1957 - L'Énigme de l'Atlantide (Atlantis Mystery) ISBN 2-87097-013-7
1959 - S.O.S. Météores: Mortimer à Paris (S.O.S. Meteors: Mortimer in Paris) ISBN 2-87097-015-3
1962 - Le Piège diabolique (The Time Trap (comic)) ISBN 2-87097-020-X
1967 - L'Affaire du Collier (The Necklace Affair) ISBN 2-87097-025-0
1971 - Les trois Formules du Professeur Sato, Tome 1: Mortimer à Tokyo (Professor Sató's Three Formulae, Volume 1: Mortimer in Tokyo) ISBN 2-87097-016-1
1990 - Les trois Formules du Professeur Sato, Tome 2: Mortimer contre Mortimer (Professor Sató's Three Formulae, Volume 2: Mortimer vs. Mortimer) ISBN 2-87097-017-X
1996 - L'Affaire Francis Blake (The Francis Blake Affair) ISBN 2-87097-051-X
2000 - La Machination Voronov' (The Voronov Plot) ISBN 2-87097-057-9
2001 - L'Étrange Rendez-Vous (The Strange Encounter) ISBN 2-87097-059-5
2003 - Les Sarcophages du Sixième Continent, Tome 1: La Menace universelle (The Sarcophagi of the Sixth Continent, Volume 1: The Universal Threat) ISBN 2-87097-066-8
2004 - Les Sarcophages du Sixième Continent, Tome 2: Le Duel des Esprits (The Sarcophagi of the Sixth Continent, Volume 2: Battle of the Minds) ISBN 2-87097-068-4
2008 - Le sanctuaire du Gondwana (The Gondwana Shrine) Not yet released[2][3][4]
2009 - La malédiction des trente deniers (The Curse of the Thirty Denarii) Not yet released[5][6]
ISBNs given are of the latest French language editions as issued by Les Éditions Blake et Mortimer in Brussels. Le Rayon «U», in many ways a precursor of the series, has been re-issued as "Volume 0" (ISBN 2-87097-023-4). Additionally, the storyboard sketches by Jacobs of Volume 12, left incomplete at the time of his death, have been re-issued in 1996 outside of the series as Dossier Mortimer contre Mortimer (ISBN 2-87097-022-6).

It’s the eighteenth book in the series, and the seventh that was not entirely created by Jacobs (album number 12, the second part of Professor Sato’s Three Formulas, was drawn by Hergé’s right-hand man Bob De Moor, based on unfinished sketches by Jacobs). Professor Mortimer has brought back a mysterious piece of rock from his expedition from the South Pole, and this leads him on the trail of a fantastic, lost civilisation. His search leads him to the entrails of the Ngorongoro crater in Tanzania (or Tanganyka, as Kenya and Tanzania were known then), not far from Lake Victoria. Thus starts a supposedly rollicking adventure that will lead Blake and Mortimer to black Africa for the first time.

