The first nine stories were used in this series, as well as four brand new stories, devised by the creators: The Viking's Bequest, The Secret of Easter Island, The Alchemist's Will, and The Druid. New writers, mostly connected to the production company as writers, dialogists or translators, were asked to come up with original plotlines which used the characters of Jacobs' stories, respected the magical/scientific Universe, but rang interesting changes.
The Viking's Bequest (French: L'Heritage du Viking) was the first of four brand new stories in the animated television series. In this story, an Icelandic physicist has developed a geothermal energy process. She invites famed professionals to inspect her claims, including Blake, Mortimer and a disguised Olrik, who attempts to steal the new discovery. The British writer and (later) filmmaker Russell Craig Richardson wrote these episodes (as well as translating all 26 episodes for U.S. and Canadian release). Icelandic authenticity was aided by the collaboration of Thor Tulinius, the Reykjavik based actor, playwright and theatre director.