According to reports, a new "attractive" villain will be seen in episode 9, a few weeks after the upcoming 'Criminal Minds' Season 10 premiere.

TVLine reported that the new villain that the BAU will hunt down will be a female, and unlike other psychopaths, this new killer will have a distinct personality.

TVLine suggests that the killer is a successful career-oriented woman in her thirties. This killer character is described to have a personality that has sudden episodes of rage, and is also emotional and impulsive.

This new killer is expected to appear in the ninth episode of Criminal Minds Season 10.

In the same report, TVLine also suggests that Rossi's second wife will appear through a 90's flashback, though it was not specified on what episode the flashback will happen.

Another star that will make an appearance in the 10^th season of Criminal Minds is Teen Wolf actor, Ian Nelson. Nelson is said to play the role of an emotionally-disturbed teenager who finds himself harassed by morbid "selfies" posted on the internet.

Fans of Criminal Minds will also expect Jennifer Love Hewitt to play a major role this new season. Hewitt will play FBI agent Kate Callahan, to replace Jeanne Triplehorn's role.

Hewitt's role will be introduced in the premiere episode, though her character's personality will come "full circle" as she investigates a case close to her.

"Although she'll fill in the blanks to at least one member of the BAU, he or she may not be the first person to find out," Zap2It reports.