The Japanese killer known as the “Black Widow” has lost her final appeal to avoid execution.
Chisaku Kakehi, 74, killed three of her accomplices, including her husband, and attempted to kill a fourth man.
Kakehé received massive inheritance and insurance money after poisoning her victims with cyanide.
Her lawyers appealed the 2017 ruling, arguing that she suffers from dementia and does not understand legal procedures.
But Japan’s Supreme Court rejected the appeal, paving the way for the final ratification of her death sentence.
Kakehi is known in Japanese media as the Black Widow, in which a female spider known as the “Black Widow” kills her male partner after having sex.
According to court hearings, Kakee joined online dating and marriage services and specifically requested to meet rich, childless men.
She was convicted of the murders of two people and her husband, aged between 70 and 80, from 2007 to 2013.
Her husband, Isao Kakehi, 75, died a month after their marriage in 2013.
According to press reports, Kakei received about 1 billion yen ($8.8 million) after her death, although she lost much of it in the stock market and fell into debt.
Kakee was also convicted of attempting to murder and rob another man who has since died of cancer.
Kakee married three other husbands who all died, but no accusation was brought against her in connection with their deaths.