
I love this series by Sarah Painter. It is gentler than the Crow Investigations books (although I love them too!) and is set in the same ‘universe’ with occasional overlap of characters.
The tidal island acts as a kind of gateway between the supernatural world and the mundane world, and although visitors can come for day trips, or even overnight stays, no one can stay on the island for more than two nights unless they are specifically selected to fulfil a role in the island community.
Luke Taylor (who runs the Island’s bookshop, and is the love interest of Esme the ward witch) has been looking for his missing twin brother for years. When he finally shows up, he should be elated, and he is, but all is not what it seems and the biggest danger yet faces the island, its inhabitants, and even the whole world.
The unholy island stories are full of myth and legend and wisdom and lovely characters. This is becoming one of my favourite series to read.