The Triple Death
According to the ancient Persian Kings and Emperors, some people deserved more than one death, if they did something bad enough. For they were allowed to truly cease to live, they had to have 3 deaths, and they were brutal. In one case, when a eunuch angered the wife of Cyrus the Great, she had his eyes pulled out of his head, and he was allowed to recover. Then he was flayed alive, then nursed back to health. When he was relatively stable (but somehow skinless), he was crucified. Definitely not overkill at all.
In some cases, the three deaths was a drawn out process. If you were lucky, however, you’d just get tortured 3 times in succession, before you were allowed to die. For example, when someone wanted to falsely take credit for killing Cyrus the Younger, when in fact he only wounded him, he got the expedited treatment from the King’s mom. The liar was stretched out on a wheel for 10 days in the sun. Then his eyes were gouged out. Finally, she finished him off by pouring molten brass into his ears until he died.