The synopsis for the upcoming episode of Criminal Minds reveals that Jennifer Jareau (AJ Cook) will have to confront her feelings about her sister's death.

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The episode titled, If the Shoe Fits, will delve into JJ's backstory a bit. The BAU will also have another tough case to handle.

The preview for the episode reveals that the criminal is female and lures young men and murders them, little else is made clear about her motivations. "Living in her own fairy tale, but falling in love with this Cinderella, is the kiss of death," runs the tagline. Kate Callahan (Jennifer Love Hewitt) is seen stating that the criminal likes dark haired handsome guys in their twenties.

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Here's the official synopsis:

"The BAU is stumped to find the common denominator among male victims in Montana, making it difficult to profile the UnSub. Also, JJ must confront her feelings about her sister's tragic death."

Earlier this month, a new behind-the-scenes photo from filming of an upcoming episode from season 10 of Criminal Minds features Jareau, and Shemar Moore, who portrays Derek Morgan, goofing around a dead body -- the actor is also playing a rather animated cadaver -- in the autopsy room.

The episode will air on November 5 at 9 pm ET/PT on CBS

Watch the preview here:

Tags: Criminal Minds CBS television