The story begins with the hero inadvertently enabling Nazek (another Warlock) to steal the Black Grimoire from its guardians at Rassin Abbey in the Old World kingdom of Ruddlestone. To make amends, the hero sets out to track down the villain in order to stop him from opening the legendary Casket of Shadows, and releasing the evil imprisoned within.
Art – both exterior and interior – was provided by Alan
Langford. It was the first and last time the artist painted a cover for the
series, despite having illustrated five FF adventures before Spellbreaker.
“They just asked me to do it,” says Langford, “which was
rather nice, because you get paid rather more for cover art than you do for
your inside work.” The image was produced using predominantly watercolours. “I
used a little bit of permanent white gouache as well, which is my normal
technique for watercolour.”
The Devilworm, which was inspired by the legend of the Lambton Worm.
One of the internal pen and ink illustrations provided by Alan Langford.
(© Alan Langford, 1993)
However, when Wizard Books republished the adventure in 2007, Martin McKenna was commissioned to produce a new piece of cover art, which was done digitally. (Green had been keen to have McKenna illustrate one of his FF adventures ever since being commissioned to write Spellbreaker, back in 1992.)