White Nights by Ann Cleeves
When Shetland detective finds a body in a boatshed it seems to be a straightforward case of suicide. He recognizes the victim - a stranger with amnesia who disrupted an artist'sparty the night before. Then another body is found. Perez knows he must break the cycle before another death occurs. But this is a crazy time of year when night blurs into day and nothing is quite as it seems...
'In true Agatha Christie style, Cleeves once again pulls the wool over our eyes with cunning and conviction.' Colin Dexter (Inspector Morse)
'Nobody does unsettling undercurrents better than Ann Cleeves.' Val McDermid


