The City of Shifting Waters (La Cité des eaux mouvantes) by the French creative team of author Pierre Christin & artist Jean-Claude Mézières is the vintage 1st album in their long-running Valérian et Laureline bande dessinée series of science fiction time travel adventure comics, free for a limited time in both languages courtesy of publisher Dargaud’s Cinebook imprint.
This was originally published way back in 1970 and is the start of one of the major classic Franco-Belgian comic book series, which is being made free to promote an upcoming film adaptation. The series stars spatio-temporal agents from a 28th century Terran Empire who protect the past. This adventure sends them back in time to New York City in 1986 (as envisioned in 1970), in order to thwart a rogue time traveler who seems to have already changed the future.
Offered in selected countries worldwide (mostly North America & Europe) in both the original French and an English-language translation, available at multiple retailers.