All of Daniel Aubrey's books can be read as standalones.

The residents of Orkney can’t sleep.

Through 18-hour summer days, the islands are drenched in unrelenting sunshine.

But a killer with a shadowy past is living undetected on the archipelago.

As the heat rises, reporter Freya will not rest until she’s brought the truth to light. Can she stop the murderer before they strike again?