Alex Rider last aired in 2021, and though it's taken its time, Alex Rider season 3 is coming. Alex Rider is an Amazon FreeVee show based on a series of novels by Anthony Horowitz. The show follows Alex Rider (Otto Farrant), a London teenager who is recruited by the Department of Special Operations, a division of MI6. His task is to infiltrate a corrective academy where the wayward children of the uber-wealthy are sent. In season 1, Alex manages to uncover a clone conspiracy, and in season 2, the conspiracy grows past the school and Alex is put on the run from his own organization.
https://screenrant.com/alex-rider-season-3-cast-story-everything-we-know/