The mousehunter - Alex Milway (First UK edition; The Mousehunter Trilogy #1)

Strange things are afoot in the mouse-ridden port of Old Town

A dead sailor has washed ashore, bearing a warning to Isiah Lovelock, the town’s richest mouse collector. It means only one thing: Mousebeard, the most feared pirate on the Seventeen Seas, has struck again. And this time, Lovelock wants revenge.

A quest for retribution

Lovelock’s mousekeeper, Emiline, soon finds herself crossing the oceans in pursuit of the notorious Mousebeard. Sea monsters and terrifying battles await her in this world of secrets and spies, a world where the Nautilus Mouse creeps at night, the Howling Mouse haunts exotic islands and the Cadaver Mouse sniffs out dying sailors.