After a landslide in the Axenstrasse, geologist Mara Graf and her boyfriend, seismologist Gian Wyss, are investigating for the Seismological Service of the University of Technology in Switzerland. For Gian this is a good opportunity to spend some weeks of Spring at home. For Mara to be with her grandmother and sister. The next day Mara Gian want to anchor indicators at the bottom of Lake Lucerne in a dive. They decide to dive alone. Before Mara could follow him, an explosion rocked their ship.
Pasquale Aleardi
as Sebastian Scherrer
Claudia Michelsen
as Mara Graf
Lorenz Nufer
as Gian Wyss
Andreas Matti
as Oberst Frick
Jessy Moravec
as Julia Wyss
Pierre Siegenthaler
as Kommissar Albert
Irène Fritschi
as Erika Wyss
