The Intruder (novel)

The Intruder is a children's novel by John Rowe Townsend, published in 1969.

Plot

Sixteen year-old Arnold Haithwaite is a sand pilot guiding parties of tourists over the sands at Skirlston (when the Admiral isn't feeling up to it). But Arnold's quiet life is shattered when a stranger turns up claiming to be the real Arnold Haithwaite. Life at Cottontree House changes dramatically for the young lad and his father when the stranger worms his way into their lives. No-one seems to have any sympathy for Arnold's predicament, except newcomers Peter and Jane, and even they aren't sure he isn't simply imagining the whole thing. Things come to a head when Arnold finds himself fighting the sea itself in the midst of a raging storm, with the stranger at his heels and Jane trapped by the rising tide in the ruins of an old church.