The Shetland Sea Murders by Marsali Taylor (Shetland #9)

Marsali grew up near Edinburgh, Scotland. Her summer family holidays were spent in a remote cottage in the West Highlands, the region where her detective Gavin Macrae lives. Like her sailing heroine, Cass, she has always been used to boats, and used her ‘gap year’ earnings to buy her first sailing dinghy, Lady Blue. She studied English at Dundee University, did a year of teacher training and took up her first post, teaching English and French to secondary children in Aith, Shetland. Gradually her role expanded to doing drama too, and both primary and secondary pupils have won prizes performing her plays at the local Drama Festival. Some of these plays were in Shetlandic, the local dialect.