An experienced expedition member who joins Viktor and Adrian in exploring the dangerous cave. She helps navigate the difficult terrain, attempts to revive Adrian, and later moves through the cave alone to find an exit. After reaching a river, she contacts her father by radio and requests rescue.
Sigrid is a biologist completing a doctorate on echinoderms and Lorenzo's current partner. She says Lorenzo is helping her establish a laboratory, while he develops an art collection inspired by evolutionary science. During dinner, she reveals that she is pregnant, prompting Lorenzo's apparent happiness.
Isabel is a pregnant Norwegian traveler accompanying Markus by motorcycle. She arrives at Vivienne’s home bleeding, accepts shelter, and later forms a more intimate and questioning connection with Vivienne. She asks about Vivienne’s former fiancé, encourages her to visit the beach, and contributes to the mystery surrounding the couple.
Heidi Toini has 6 screen credits in a career dating back to 2010. Signature works include Cave, The Time In Between, The Son. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
