Sensible Emma Tupper stays with her wild Scots cousins, in whose private loch there is rumoured to be a monster. They also own the duplicate of one of the earliest submarines, in which they discover the reality behind the rumours, and then have to decide whether to exploit their find or conceal it and protect its precarious existence.
(description from author's website)
Original title: Emma Tupper's Diary
Genre: Fiction→ Children & Young Adult→ Humorous Fiction
Fiction→ Children & Young Adult→ Adventure