Characters
Niklas & Clara
Two distinct ways of reading a room, a system and the people between them.
Meet the charactersA winter at sea · January 2026
Every door leaves a trace.
Maritime mysteries, modern technology and unexpected investigations aboard the world's cruise ships.
Coming soon · Book one
Access Denied
Valuables disappear from locked cabins. There are no signs of forced entry, no witnesses and only doors that appear to have opened for the wrong people.
Discover the book
The world behind the story
Journey
A route in winter
From Hamburg to the ports and cities that inspire the first case.
Explore the journey