Death on a Longship - Marsali Taylor

When she wangles the job of skippering a Viking longship for a film, Cass Lynch thinks her big break has finally arrived - even though it means returning home to the Shetland Islands, which she ran away from as a teenager. Then the 'accidents' begin - and when a dead woman turns up on the boat's deck, Cass realises that she, her family and her past are under suspicion from the disturbingly shrewd Detective Inspector Macrae.
Cass must call on all her local knowledge, the wisdom she didn't realise she'd gained from sailing and her glamorous, French opera singer mother to clear them all of suspicion - and to catch the killer before Cass becomes the next victim.