A death cult threatens Skarn Head lighthouse and its keeper... can mysterious man of action Saturnus Phinn save them?
What is the secret of Skarn Head lighthouse? Why does the sinister Dr Lestyre want with the place... and what's his dastardly plan for Kitty Buchanan and her father Fulton?
And what mysterious creatures lurk in the bay, beyond the rocks where scores of ships are lost?
Only Saturnus Tyndrum Phinn - master of the occult, swordsman, inventor and man of action - has the answers.