Septimus Heap and the whole gang are trapped on an island, where a mysterious spirit sings an enchanted song to lure ships onto the rocks. But there is more going on beneath the surface of the murky waters around the islands of Syren, and only Septimus and his friends can unravel the mystery in time to stop the Darknesse that threatens the Castle.

I loved this 5th book in the series! I enjoyed the character development, the imaginative plot, the twists and turns and surprises, and of course, the wonderful characters.

There's so much depth to the characters, and I love how they interact and argue and understand or misunderstand each other. So many levels of character dynamics happening in every chapter!

There's so much action in the plot, and many incredibly unique magical elements in the story. I love the detailed world-building, that provides the perfect backdrop for this exciting story.