Eva Ruiz

Sheriff Eva Ruiz is an incidental character who appeared in A Rite of Passage.

History
Not much specific information is disclosed about Ruiz's past, other than she hired Ronald Boyd years prior to A Rite of Passage without knowing of his bad leg or his status as a serial killer. Boyd eventually became intimidated by her and sent the heads of three of his victims, one of which was cut off recently, to the police station. This leads to her calling the BAU in to aid the investigation. She is present when the BAU interrogates a suspect in the murders who is eventually let off the hook. She and the BAU realize that the unsub is making it personal for her when he discards the head of his latest victim at her home.

When the BAU interrogate the immigrants that were traveling with the latest victim, one of them, a child, mentions seeing "The Sun" when it was nighttime, something that intrigues her. Outside, Boyd approaches her and tells that he believes the child might be referring to an abandoned Gold Harvest barn, whose symbol is the Sun. The two of them drive to the barn, where they spot the barn's other symbol, Santa Muerte, before Ruiz realizes that Boyd has a bad leg and remembers the profile given by the BAU, which suggested the unsub is handicapped in some way. She pulls out her gun and tries to shoot Boyd, but Boyd is faster and instantly kills her.

Afterwards, Boyd gutted her, cut off one of her hands, and cut out her eyes and tongue in hopes of framing the Lugo Cartel, a drug cartel: the suspect interrogated by the BAU earlier had mentioned he would do the aforementioned mutilation process to whomever he murdered. Unfortunately for Boyd, the ﻿plan failed and when he was tracked down by the BAU, he was shot dead by Morgan when he retaliated violently with a machine gun.

Appearances

 * Season Five
 * A Rite of Passage