Blue Lightning by Ann Cleeves
This book is a gripping crime novel set on the remote Shetland Islands, where Detective Jimmy Perez returns home with his fiancée, only to be caught in a murder investigation when a renowned scientist is found dead. As a storm isolates the island from the outside world, Perez must navigate through a close-knit community full of secrets and lies to uncover the murderer. The harsh and beautiful landscape of the Shetlands, along with the complex relationships and tensions within the small community, provide a compelling backdrop to this mystery, testing Perez's detective skills and understanding of human nature to the limits.