4x14 Sex and Violence

Sam and Dean take on a case in [Πρέπει να είστε εγγεγραμμένοι και συνδεδεμένοι για να δείτε αυτόν το σύνδεσμο.] in which three men inexplicably beat their wives to death. The brothers realize that behind the murders is a [Πρέπει να είστε εγγεγραμμένοι και συνδεδεμένοι για να δείτε αυτόν το σύνδεσμο.], a creature that can take different forms and desperately needs love, compelling people to kill others or themselves as a show of devotion. The siren has been posing as different strippers at a strip-club to meet and seduce men. Dean suspects that the siren is a doctor who Sam took an attraction to and had sex with while Dean was at the strip-club and bonding with the FBI agent assigned to the case. However, the FBI agent reveals himself to be the siren; it had taken on the form of Dean's ideal little brother in order to get close to him and take Sam's place. The siren puts Sam and Dean both under its spell and then pits them against each other in a fight to the death for its love. The ensuing fight sees Dean poised to kill Sam with an axe before Bobby shows up and kills the siren with its own venom by dipping a bronze dagger in Dean's blood and flinging it into the fleeing siren's back. The siren's death breaks its hold over its victims. Although Bobby tells them that they hadn't been themselves under the siren's influence, bitterness and tension between the brothers remains, particularly about the cruel things they had said to one another Dean having said that Sam is no longer the person he knew and Sam having belittled Dean's trauma over Hell under the siren's spell.