Il club dei viaggiatori immaginari (Ulysses Moore #12)

At Kilmore Cove it is dawn of the longest day. The quiet of the cove is shattered by thunder, lightning and crashing. But it is not a thunderstorm: it is the broadsides spewed from the firemouths of the Mary Grey, Captain Spencer's legendary ship. It is the showdown, and the Covenant twins find themselves facing the most terrible of foes without the help of Ulysses Moore, the only one who has ever been able to defeat him...