Cristóvão Correia is a Portuguese psychologist and therapist based in the Lisbon area. He was born in the '80s and saw a lot of great (now famous) movies in theaters. He enjoys reading in different formats (novels, short stories, comic books, and gamebooks), as well as TV shows, music, chess, and tabletop RPGs. He practiced Aikido for several years and tried to learn how to play guitar. He decided to focus on writing instead.

He writes science fiction, fantasy, and horror in both Portuguese and English. He also enjoys blending genres. He publishes short stories online, and some of them have been published in Portuguese by Fábrica do Terror, a portal dedicated to horror in Portuguese. One of his stories, ""The Documentary,"" has also been published in a physical anthology. It was one of the stories that inspired a Portuguese indie film that's currently in production.

Mendelson's Return is his debut novel, the first book in The Grenvaldia Chronicles series. It's a science fiction action thriller set in Portugal with characters with superhuman abilities.