The latest episode of "Criminal Minds" season 11 just aired last Wednesday, Oct. 14^. The third episode of the season titled "'Til Death Do Us Part" and directed by Joe Mantegna, who also plays David Rossi in the series, featured a story about sibling rivalry.

Episode 3's unsub went after women who were engaged and celebrating their last moments of being single.

It was seen that the unsub would usually give the victim a blow to their head and keep them in a basement before strangling and labeling them.

The team was caught up with the idea that a man was behind all the attacks, but later on realized that the killer was female after all.

It was then discovered that the unsub was a mentally ill woman named Dana Seavers (Ashley Fink), who ran a bridal shop with her sister, Nicole (Laura Breckenridge).

Dana was under the delusion that her love — who happened to be Nicole's boyfriend and the wedding photographer — Ryan Becker (David Paetkau), was instructing her to eliminate any girl who came to the shop and flirted with him.

The episode also showed fans some bits of Morgan (Shemar Moore), Tara, and Rossi's relationship story. It was then revealed that Tara is engaged but is in a "complicated" relationship.

Meanwhile, in next week's episode 4 titled "Outlaw," the Behavioral Analysis Unit (BAU) goes on a trip to Las Vegas, New Mexico.

As stated in the synopsis, the team heads to the location where three restaurant employees were found dead in a presumed robbery/homicide case. Not much else has been revealed, but it was also teased that the BAU turns to the town's cold case from six years ago to get some clues.

Hollywood Hills gathered that the upcoming episode will have Stephen Monroe Taylor, Jesse Luken, Benito Martinez, Rebekah Salgado, and Grainger Hines as some of the guest stars.

In addition, Virgil Williams wrote the story with Larry Teng as the director.

New episodes of "Criminal Minds" season 11 air every Wednesday at 8 p.m. EST on CBS.