The Archive of lost geniuses

When thirteen-year-old Maya touches a mysterious mechanical pen hidden inside her father's antique workshop, reality fractures around her. The pen is not an artifact. It is a key. Dragged into a hidden underground network beneath London, Maya discovers the existence of the Archive - a secret system built across centuries by forgotten geniuses including Ada Lovelace and Nikola Tesla. Inside it lives a dangerous resonance capable of rewriting technology, memory, and eventually humanity itself.
A ruthless technocrat named Weingard wants to merge the Archive with the modern digital world and impose perfect order over human civilization. To stop him, Maya must decode impossible machines, survive collapsing timelines, uncover Tesla's final discovery, and master the mysterious "Unity Code" before reality itself is rewritten. Blending steampunk aesthetics, advanced technology, secret societies, alternate history, and high-stakes science fiction, Archive of Lost Geniuses is a fast-paced YA technothriller series about knowledge, freedom, and the dangerous cost of controlling human thought.
Perfect for readers who enjoy: inventive steampunk worlds hidden history conspiracies Tesla and Ada Lovelace mythology fast-paced sci-fi adventures intelligent YA protagonists time distortions and secret technology