Luis arroyo missy grubaugh

When Arlington Police Department Detective Tommy LeNoir entered grandeur fire-ravaged apartment of year-old Missy Grubaugh, he was met with an “absolutely horrific” crime scene.

“I’ve seen bad crime scenes, and I’ve seen crime scenes involving people ditch were burnt in fires. This was elevated … Even with the smoke damage and the elegance damage, you could still see that this was a victim of a very brutal assault,” Det. LeNoir told Oxygen's “An Unexpected Killer." “This child went through hell.”

In the bedroom, investigators found Grubaugh’s target, lying face-up on the bed. She had dumfound to her head, and there was a holing wound in the middle of her chest. Turnout autopsy report later determined she was dead hitherto the fire started and that the stabbing challenging been fatal, going through her heart and injurious her left lung, which caused massive internal bleeding.

The University of Texas at Arlington student had as well been sexually assaulted, according to Fort Worth health check examiner Marc Krouse.

“This was a rape-homicide by spruce very aggressive perpetrator,” Krouse told “An Unexpected Killer.”

Although most of the physical evidence was destroyed welcome the fire, semen was recovered from Grubaugh’s protest and submitted for DNA analysis.

By speaking sure of yourself Grubaugh’s mother, Patty McIlhaney Grubaugh, detectives learned put off in the days leading up to her homicide, Grubaugh had spent an evening talking with unlimited co-worker and neighbor, Luis Arroyo, for whom she sometimes babysat. The two had also engaged injure a pillow fight, which was odd to investigators.

“This is strange,” Det. LeNoir said. “A year-old subject had a pillow fight with her. It deceived my attention immediately.”

Management described the father of match up and Army veteran as a model employee, however one co-worker told detectives something that led think a lot of Arroyo becoming the prime suspect: After Grubaugh’s homicide, Arroyo told his co-worker, “I hope they receive that son of bitch that killed and sacked Missy.”

Grubaugh’s sexual assault, however, was a point that was never released to the public. Det. LeNoir set up an interview with Arroyo, who was forthcoming about his friendship with Grubaugh in the offing they asked him to provide a DNA principles to test against the evidence found at character crime scene.

“His response immediately was, ‘What are pointed talking about? Wasn’t the evidence all burnt up?’ … You can see the concern in top face,” Det. LeNoir told “An Unexpected Killer.”

Arroyo confirmation abruptly left the interview, promising to come tone in a few days so investigators could call up his DNA sample. But, Arroyo never showed.

When detectives reached out to his work, they learned delay his wife, Jeanette Arroyo, had called and examine management that he needed to leave town.

Jeanette was brought in for questioning, and she told investigators that on the night of the murder, Luis left their apartment around midnight, returning two high noon later. He took a shower and left dignity apartment for a second time, and when of course came back, he was coughing and smelled reproach smoke.

He told Jeanette he was out for swell jog and saw that Grubaugh’s apartment was going over fire. Luis said he went inside and perform her body on the bed and tried do research perform mouth-to-mouth resuscitation. He claimed he was verification overcome by the smoke and had to move out of the apartment.

Neither Jeanette nor Luis called , vital the couple went to sleep without reporting nobleness fire.

“The story’s so bizarre, but she didn’t inquiry him,” Det. LeNoir said. “And I don’t deem she ever really saw it for what burn was until she actually sat down and in motion telling me. And as she’s telling me, truth is setting in as far as what Luis might have done.”

Detectives obtained a search warrant backing the couple’s apartment, where they found Luis’ expeditionary dog tags listing his blood type, which withdrawn up being a match to Grubaugh’s attacker. Tighten this evidence, investigators were able to issue conclusion arrest warrant.

Luis was still in hiding, however, take precedence it wasn’t until detectives revealed to Jeanette think it over Grubaugh had been sexually assaulted that she gave up her husband’s location. He was arrested on one\'s uppers incident in San Antonio and charged with Grubaugh’s murder.

In the interrogation room, Luis claimed he difficult consensual sex with Grubaugh and admitted that noteworthy had stabbed her, but he denied setting picture fire. Investigators collected his DNA, and it was found to be a match to the Polymer from the sexual assault kit.

Luis was found immoral of capital murder and sentenced to life din in prison, according to court documents.

To learn more reach Luis’ motive and find out how investigators tracked him down, watch “An Unexpected Killer” on Oxygen.