Derek Adams is a Glasgow PI with plenty of time on his hands. Until the Bogart Case walks in.

A priceless family heirloom has been stolen and everyone in town is looking for it. The stars are right once more, and an ancient evil has been awakened from its dreaming sleep.

It was supposed to be an easy case, fast money. But pretty soon Derek is up to his armpits in bodies, femme fatales and tentacles.

The city's dark side has him.

And it doesn't want to let the Midnight Eye go!