The Turn of the Key. Ruth Ware. Book in Ukrainian.
The protagonist, Layla, agrees to join her boyfriend in a new reality show. Several couples are sent to a remote tropical island to compete for a grand prize and prove that their relationship is perfect.
At first, it seems like a typical TV show—complete with challenges, cameras, and rivalry. But after a severe storm, contact with the outside world is lost: the production crew fails to return, supplies run out, and the contestants are left stranded on the island.
Tensions gradually rise, secrets come to light, and it becomes clear that danger may stem not only from nature but from the contestants themselves. Laila tries to figure out whom she can trust and how to survive in a situation where the rules of the game no longer apply.