Ph.d. Kaja Nordengen (b.1987) is a physician specialized in neurology. Her debut book Your Superstar Brain has sold immensely well, holding a steady top position on the general non-fiction best seller list. Foreign rights are sold to:
- Norstedts, Sweden
- Rosinante & Co, Denmark
- Bazar, Finland
- Piaktus/Little Brown, UK
- Piter Publishing, Russia
- Marginesy, Poland
Agreements are being negotiated with two more foreign markets.