Voyage of the Damned by Frances White

If Agatha Christie wrote fantasy, this would be it!

For a thousand years, Concordia has maintained peace between its provinces. To mark this incredible feat, the Emperor’s ship embarks upon a twelve-day voyage to the sacred Goddess’s Mountain.

Aboard are the heirs of the twelve provinces of Concordia, each graced with a unique and secret magical ability known as a Blessing. Except one: Ganymedes Piscero – class clown, slacker, and all-round disappointment.

But when a beloved heir is murdered, every one of these powerful people becomes a suspect.

Now Ganymedes – alone and vulnerable without a Blessing – must become the hero he was never born to be.