All 8 Uses

red herring
in
And Then There Were None
(Auto-generated)

Four little soldier boys going out to sea; A red herring swallowed one and then there were Three.†
p. 34.4

red herring = a diversion intended to distract attention from the main issue
She recited in a meaning voice: "Four little soldier boys going out to sea; A red herring swallowed one and then there were Three."†
p. 247.5
She went on: "A red herring—that's the vital clue.†
p. 247.5
His disappearance is just a red herring across the track.
p. 247.8 *
Actually mentioning a red herring in the verse.†
p. 248.3
A red herring swallowed one ...†
p. 296.4
He took the red herring all right.†
p. 296.5
Armstrong's death is associated with a "red herring" which he swallowed—or rather which resulted in swallowing him!†
p. 299.5

Definitions:

(1) (red herring as in: distracted with a red herring)
a diversion intended to distract attention from the main issue
(2) (meaning too rare to warrant focus)