Gargantis by Thomas Taylor: Signed bookplate copy
"Has the mighty Gargantis returned?
A ferocious storm is raging in Eerie-on-Sea.
An ancient artifact filled with a wondrous light has washed up on the beach.
And a mysterious hooded stranger has just checked into the Grand Nautilus Hotel.
Herbie and Violet know that these events are connected - and that they must act fast to save the town. But their investigation may just lead them to the cold, dark bottom of the sea..."