Spirits from island - a novel idea for Halloween

I believe the answer is:

ghost-story

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'island a novel idea for halloween' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'spirits from' is the wordplay.
'spirits' becomes 'ghosts' (ghost is a kind of spirit).
'from' becomes 'tory' (I can't explain this - if you can you should give a lot more credence to this answer).
'ghosts'+'tory'='GHOST-STORY'

Can you help me to learn more?

I've seen this clue in the Irish Times.

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