An explanation (SPOILERS)

McKenna (Juno) is a siren, the daughter of a witch. She openly suggests that she’s a witch as well. Using her charms, she puts a ‘spell’ on Rachel (Hahn) at the strip club and so the mesmerized Rachel eventually tracks her down and brings her home. While Rachel sincerely intends on being a positive influence on McKenna and help her get out of the dubious sex business, McKenna intends on luring Rachel into her sleazy lifestyle. McKenna explains to Rachel why she has no qualms about what she does and even justifies it. Rachel is intrigued until she sees McKenna’s sordid work up close and rejects it because she discerns that McKenna is unrepentant about her vocation.

Rachel immediately puts the kibosh on McKenna babysitting her friends’ girls because she’s clearly a bad role model, but the mother has yet to figure out a way to get the prostitute out of the house without making too many waves. That’s when the wives go out on the town while the husbands stay home to party with tantalizing McKenna lurking nearby. Needless to say, it’s a recipe for disaster and provides a way for McKenna to stick it to Rachel and her ‘judgmental’ friends.

The negative fallout provokes Jeff (Radnor) to confront Rachel on how she could be so stupid to bring an unabashed whore into their abode. He didn’t comprehend Rachel’s reasoning: Did she want him to sleep with McKenna? Did SHE want to sleep with her? Jeff failed to grasp that Rachel was under McKenna’s “spell” and inadvertently doing her bidding.

Fortunately, Rachel, realizes her error (“waking up” from McKenna’s enchantment) and seeks reconciliation with her husband, now fully appreciating her family.

Moral of the story: It might not be a good idea to bring a hot siren into your home to live.