Lake that’s spooky by all accounts (4)
I believe the answer is:
erie
'lake' is the definition.
(Lake Erie is one of the Canadian/US 'Great Lakes')
'spooky by all accounts' is the wordplay.
'spooky' becomes 'eerie' (synonyms).
'by all accounts' indicates a 'sounds like' (homophone) clue ('by all accounts' can mean 'we hear').
'eerie' sounds like 'ERIE'.
'that's' is the link.
(Other definitions for erie that I've seen before include "The lake sounds weird" , "North american lake sounds spooky" , "Great lake in Eire" , "One of the Great Lakes" , "N. American lake" .)