Spooky condition is serene, somehow (8)

I believe the answer is:

eeriness

'spooky condition' is the definition.

'is serene somehow' is the wordplay.
'somehow' indicates anagramming the letters.
'is'+'serene'='isserene'
'isserene' with letters rearranged gives 'EERINESS'.

(Other definitions for eeriness that I've seen before include "Ghostly atmosphere" , "Weird quality" , "'Ghostliness, scariness (8)'" , "Ghostly quality" , "Horror movie featuring such" .)

I've seen this clue in The Times.

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