The Boggart, And The Boggart And The Monster, By Susan Cooper, Unabridged 7 Audio Cassettes, 10.5 Hours, Read By David Rintoul

"THE BOGGART An invisible spirit plays pranks on humans." "THE BOGGART AND THE MONSTER The boggart accompanies Emily Volnik and her brother, Jessup, on an exciting expedition in search of the Loch Ness Monster..." (from back case)