Criminal Minds is all-new this Wednesday. In the upcoming 20th episode, the FBI's Behavioral Analysis Unit (BAU) will take a trip to the backwoods of West Virginia only to find the bodies of two murder victims whose families happen to be at odds with each other, revealing the truth behind the matter, and leaving them to discover which family is responsible for the crime.

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"Whodunit?" Is the question for which the BAU is in search of an answer. According to the Latino Post, Episode 20 will focus on the back-story revolving around the intense family rivalry that the Howard family and Lee family have between each other, which leads to family members' murder.

What's more, a promo for the upcoming episode reveals that the "horrifying tale of the Mountain Man, a killer who was born 40 years ago," will also be a main storyline in the episode. Morevover, reportedly CarterMatt has assured fans that they can "expect the Matthew Gray Gubler-directed episode to depict elements similar to 'Hatfields & McCoys,' except for that it takes place in modern times and the actions of a few are more sinister."

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The official TV Guide synopsis states: "When two murder victims are found in a backwoods community in West Virginia, the BAU will uncover a long-simmering feud between two families and must investigate which side could be responsible for the deaths."

Tune into CBS, April 2 at 9 p.m. to see how it all goes down!

Tags: criminal minds season 9 spoilers CBS