Publisher's Synopsis
David hates being The Invisible Boy, ignored by his eccentric family because he's considered too young to understand anything. But right now he's happy to be forgotten... Dr McKelvie has signed him off school to recover from a bout of pneumonia, and David is looking forward to plenty of time for his imaginary swashbuckling adventures as The Sea-Fox, buccaneer captain and terror of the sea lanes.
Then his dry-as-dust aunt volunteers as his tutor and David is devastated. This is worse than school! But it turns out that Aunt Annie has some secrets to share, and together they set off on an exciting fantastical voyage.
