Green’s Dictionary of Slang

spooks, the n.

(US/Aus.) a sense of terror, of emotional uneasiness.

[US]‘Ed Lacy’ Men from the Boys (1967) 42: The quiet of the room gave me the spooks.
[US]S. King Christine 473: Jesus, that gave me the spooks.
[Aus]M.B. ‘Chopper’ Read How to Shoot Friends 42: While I have no problem in killing a guy, going to a friend’s funeral gives me the spooks. I think they are bad magic and something I would avoid at all cost.