No. 5: Lisa Mansfield Carlton

Played By: Lynne Harbaugh (1988-89)

Feminine Wiles: Heiress Lisa became unhinged when she learned her father had paid Brad to end their marriage, and she sought to win him back. When her attempts failed, she kidnapped Brad and held him hostage in a cage at an isolated mountain cabin. When Lauren stumbled on the imprisoned Brad, Lisa forced her into the cage, too, turned on the gas and left them to die. But Jack arrived in the nick of time, overpowered her and saved Brad and Lauren. Lisa escaped.

No. 6: Isabella Brana Williams

Played By: Eva Longoria (2001-03)

Feminine Wiles: Initially a pawn of Michael Baldwin's to keep Paul and Christine apart, Isabella played damsel in distress for the clueless P.I. in 2001. She quickly seduced him, had his son, Ricky, a year later, and they married. But when Michael confessed his machinations to then-fiancee Chris, Isabella lost her marriage and went loopy. She faked her death and framed Christine for "killing" her. After returning and attempting to kill Chris and make it look like suicide, Isabella was arrested for her crimes.