Plot Synopsis

MEAN GIRL MURDERS is a one-hour docuseries that explores murders where female jealousy could be a prime motivator.

On Wednesday, December 21, 2022 at 10pm ET/PT, Investigation Discovery premiered a sneak-peek episode of MEAN GIRL MURDERS. In this special episode, "Showgirl Showdown," Debbie Flores Narvaez isn't afraid to ruffle feathers as she climbs to the top in the cutthroat world of Vegas showgirls. When Debbie goes missing, investigators must wonder if a jealous dancer or a romantic rival took her out.

MEAN GIRL MURDERS made its official series debut on Monday, March 13, 2023 at 9pm ET/PT on Investigation Discovery. In the series opener, "Battle of the Besties," Fort Wayne, IN, high school volleyball star Stacy DeGrandchamp is pretty and popular -- until jealousy and rumors lead to a rift in her circle of friends. When a fight at a party turns deadly, witnesses won't talk, and her killer almost gets away with murder. Other episodes showcase the cutthroat world of Vegas showgirls; secrets and betrayals in a small Texas town; a revenge plot from an edgy party scene in Albuquerque; mounting hostility between two rodeo queens in Texas, and more.

The sophomore season of MEAN GIRL MURDERS premiered on Monday, March 25, 2024 at 9pm ET/PT on Investigation Discovery. Season 2 unpacks the layers around the key emotions and dynamics within female relationships at the center of a deadly mystery, while delving into how these intricate dynamics turning toxic can sometimes lead to shocking acts of violence. In the season opener, "In Deadly Harmony," high school freshman Keri Murphy isn't afraid to fight for a place in the competitive world of show choir. When she teams up with fellow songstress Rebecca Keller, their passions collide, and the only way to get what they want is if someone ends up dead. Other episodes this season feature a rivalry between a Dairy Princess and Homecoming Queen over a handsome farmer that turns deadly, a fierce feud between two top students for the title of valedictorian that results in a shocking act of violence in the middle of Economics class, and a complicated case of how one woman's lie around her own pregnancy motivates a twisted kidnapping case with a horrifying conclusion. From cutthroat competition to pangs of jealousy and cruel gossip, each episode digs deeper into what pushed these mean girls to murder.
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On Monday, May 20, 2024 from 9-11pm ET/PT, Investigation Discovery debuted back-to-back new episodes to close out the second season of MEAN GIRL MURDERS:

"She-Devil" (9pm): Christa Pike is the only woman on death row in Tennessee; in 1995, she is introduced to Satanism, and her fascination grows until it comes to a deadly head in the woods one night in January.

"Built for Murder" (10pm): Las Vegas is a playground for top female fitness competitors; winning is important, and when jealousy spirals out of control, one woman loses her life.