Before Blake & Mortimer, Edgar P. Jacobs had created a first comic that has now attained mythical status - The U Ray. Here it is now, finally translated into English. The nation of Norlandia is in conflict with its powerful rival Austradia. The eminent Professor Marduk is tasked by the High Council of Norlandia with militarising a major scientific discovery: the U Ray. However, doing so will require finding a deposit of Uradium, the ore needed to power the ray. And the only known deposit is in an unexplored volcanic archipelago. An expedition is quickly put together, but in the shadows, the Austradian intelligence services are waiting for the moment to act...

Time for Captain Blake to enter the scene and face ...Robo-Mortimer! Professor Sato, who hasmade incredible advances in the field of cybernetics, has been kidnapped byOlrik. A cautious man, Sato had revealed to Professor Mortimer the hiding placeof the three formulae that govern his discoveries, and asked him to protectthem if need be. Unfortunately, Mortimer is eventually captured as well, andOlrik makes a robotic copy of him to retrieve the formulae. Now, though,Captain Blake is coming to Japan, hell bent on finding his old friend...

In a past almost, but not entirely, like ours, the world lives in dread of a new power, an empire centred in Tibet and led by a megalomaniac. When the inevitable attack comes, it destroys all opposition, and capital cities across the planet are left burning. But, in Great Britain, Professor Mortimer, inventor of a mysterious weapon named the Swordfish, and his friend and protector Captain Blake, have escaped the destruction, and must make their way to a secret base...

Deep under Sao Miguel island, rumoured to be the last emerging part of Atlantis, Professor Mortimer has discovered samples of a mysterious radioactive metal. Could it be the Atlanteans' legendary orichalcum? When he and his friend Blake set out on an expedition into the depths to find out, sabotage occurs in the form of their old opponent Olrik. And soon, all three will be embroiled in a power struggle far bigger in scope than they could have imagined.

One evening in Tokyo, air traffic controllers detect an unknown flying object and send two aircraft to intercept and identify it. However, the fighters' last message before they crash into each other is 'ryu' - dragon! The whole business has deeply upset Professor Sato Akira, and he calls upon his friend Mortimer, who can always be counted upon for good advice. But before he's even received the invitation, Mortimer is already targeted by men hell bent on getting rid of him... Captain Francis Blake, dashing head of England's MI5. Professor Philip Mortimer, world-renowned nuclear physicist. The most distinguished duo of gentleman-adventurers, battling the forces of evil and their arch nemesis Olrik around the globe, below the earth, even across time itself... The 22nd adventure of Her Majesty's finest protectors!

The captain and the professor have finally made it to the secret base with the Swordfish blueprints, and construction has begun on the extraordinary machines. Olrik hasn't had his last word, though, and he is ready to take tremendous risks to locate the world's last bastion of resistance and freedom. A race against time is on between Imperial forces on one side and Mortimer's teams of engineers on the other...The fate of civilisation is at stake.

A necklace that used to belong to Marie Antoinette, the last French queen before the French Revolution, turns up in the hands of a British collector who decides to present it to Queen Elizabeth. Blake and Mortimer's sworn enemy Olrik, about to be tried in Paris, manages to escape and steals the precious piece of jewellery in front of their very noses during a glittering reception in the French capital. The affair threatens to turn into a full-blown diplomatic incident, especially since Olrik is doing his best to embarrass Blake and Mortimer by tipping off the press about his every move.

Captain Blake having been assassinated at Athens Airport, Olrik seems to have won the first round. A furious Mortimer swears that he'll avenge his friend. He goes on the hunt for Olrik, but information is scarce. Sheik Abdel Razek, an old man with mysterious powers, protects him against Dr. Grossgrabenstein's crew. The doctor is a devoted Egyptologist who has undertaken excavations not far from the Great Pyramid. Amidst strange events, Mortimer sometimes feels like he's losing his way in this investigation that will lead him into the darkest depths of the Great Pyramid.

Extreme weather threatens the whole of continental Europe, turning the lives of its citizens inside out. The French government calls Professor Mortimer to help solve this enigma. Mortimer travels near Paris to visit his friend Professor Labrousse, the chief French meteorologist. But when the taxi driver Labrousse sent to meet Mortimer at the station disappears, our friend becomes the prime suspect. Mortimer gets in touch with his old friend Blake, also in France, to help him out of this tricky situation. However, Blake disappears as well, so Mortimer and Labrousse have two missing-person cases to investigate. They soon discover that the two disappearances are not only linked to each other, but also to the climatic catastrophes.

Professor Philip Mortimer has decided to spend his holidays in Cairo with his trusty servant, Nasir. There he plans to meet his old friend, Professor Ahmed Rassim Bey, who offers him the fantastic opportunity of satisfying his passion for Egyptology. Professor Bey has invited him to take part in deciphering his latest discoveries--in this case, some papyrus coming from mummies of the Ptolemaic age. Mortimer and Bey soon realize that one of the fragments deals with the 'Chamber of Horus, ' a fabled crypt that could contain priceless treasures..

London's walls resound with the incredible exploits of the 'Yellow Mark.' The spectacular actions of this mysterious criminal are on the increase: holding up the Bank of England, robbing the imperial crown... No one seems able to stop him. He is so audacious that he lets the police know in advance where he will commit his crimes, each time ridiculing Scotland Yard a little more. The apparent ease with which he evades police schemes begins to worry the highest authorities of the country. The Home Office asks Captain Francis Blake to solve the mystery and discover the identity of the man who hides behind the Yellow Mark. The captain immediately takes as partner his old friend, Professor Philip Mortimer, whose scientific knowledge will be invaluable in solving this extremely complex enigma. Who hides behind the Yellow Mark?