A forbidden island.
 

A secret operation.

And a deadly danger hidden in the depths…

Isak and his kite-riding friends are looking forward to sun, sand, and flirting when a group of girls invites them along for a beach cleanup on an island far out in the Oslofjord.

But when one of the boys falls into a mysterious bunker, and two of the girls discover a strange structure underwater, they can't resist the temptation to explore further.

The secrets they uncover are both deeper and more dangerous than they ever imagined. Now they must stay alive long enough to reveal what lurks in the depths — and who will stop them at any cost...
 

"Dype hemmeligheter" (NO) / "Deep Seacrets" (ENG) is a thriller for teenagers and young adults, featuring action, romance, and mystery. It has already received positive feedback from several of Norway's major publishing houses and is scheduled for launch in 2027.