Black Widow's Treacherous Web

Stacey Castor killed both of her husbands, then tried to kill her daughter.

Mysterious Deaths Lead Police to Black Widow

'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
'Black Widow' Stacey Castor Accused in Anti-Freeze Murder
Stacey Castor, 41, is shown here on the day of her wedding to David Castor in August 2003. Stacey is at the center of a web of lies linked to the deaths of David and a previous husband, as well as the overdose of her daughter, Ashley Wallace, 21. Clockwise from left: Chauncey Eaton, David Castor, Stacey Castor, Judie Eaton, Bree Wallace, Ashley Wallace.

Watch the story on "20/20" tonight at 9 p.m. ET. (Courtesy Dani Colman)
Slideshows
ABC News on Facebook