Who said "There is no mercy in judgment, only execution."?

This quote is attributed to Justice Wargrave.

There is no mercy in judgment, only execution. - Justice Wargrave

"There is no mercy in judgment, only execution."

Justice Wargrave Justice

Character in And Then There Were None

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"Murder is justified when the victim deserves it."

"The guilty cannot hide forever."

"Justice must be served."

"Every man and woman is alone."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."