there in court and look at this man who actually murdered mike sakara and to thirg of all the other people who lost their lives and family and friends who lost people because of this monster who was sitting there, but at least he was finally put awa . >> up next, a home invasion turns to murder. >> just extreme overkill. >> so much violence, and no one with a clear motive. >> as best as law enforcement could establish, she had no enemy. >> that is until police discover a romance gone horribly wrong. >> we believe it could be a lover or someone who wanted her out of the way so there could be a new lover. >> i don't know if a love triangle can go really good but this one went really bad.

>> life kopt have been better for avis banks. she graduated from college, found a job she loved in a day-care center and met the plan she planned to marry, but an unexpected pregnancy changed some of her plans. >> when i learned that avis was pregnant, i wasn't thrilled, i know avis asked for forgiveness and she was going to marry her fiance. >> avis and keon bought a house together in a suburb of jackson, mississippi, but tragedy struck a few months before the baby was due to be born. when keon came home from work

and found avis lying on the garage floor in a pool of blood, police were called to the scene. >> law enforcement immediately orders him away from the body. they want to make sure that he's not possibly the perpetrator in the case. >> keon called us and we turn the corner and we saw the emergency vehicle and all these police cars, when i saw that yellow tape, i knew what wa it meant. i knew then that avis was gone. >> avis and her unborn child were pronounced dead at the scene. >> it was obvious that she had been shot in the head, in the chest, and possibly in the stomach. we weren't totally sure as to how many shots she had received at that time. it also appears, though, she had been cut with some type of object.

>> it appeared that the killer waited inside the house until avis came home from work, then attacked when she stepped out of her car. the point of entry was the back door, where police found two high quality shoe impressions. >> the prints on the glass door were fairly good prints, good clarity. they were two dimensional impressions in dirt on the glass door. >> analysts estimated the prints were made from a man size 8 shoe. it appeared the killer tried to kick the glass in. when that didn't work, the killer kicked through the doorjamb. >> we were surprised the glass didn't shatter. >> several rooms in the house had been ransacked. immediately suspicious, police performed a gunshot residue test

on keon's hands. >> we did discover particles of gunshot residue on mr. pitman. >> keon appeared to be unconcerned. >> he was laughing. i have to remind him that he had a fiance and a baby that were dead. and he said at that point, oh, yeah. >> when keon called his lawyer, his anger was clearly evident. anger not toward the killer, but the police. >> i don't like this at all. [ bleep ] i came home. i knew something was up. >> keon had no criminal record, but he wore size 8 1/2 shoes, consistent with the shoes the killer was wearing when he tried

to kick in the back door and that wasn't all. >> there was blood on the button down shirt he had on as well as blood on pants. >> dna tests showed the blood had come from avis. >> maybe, he didn't want to settle down and be a father and be a husband. maybe he was trying to get rid of her. scott: appears buster's been busy. man: yeah, scott. i was just about to use the uh... scott: that's a bunch of ground-up paper, lad! scotts ez seed uses the finest seed, fertilizer, and natural mulch that holds water so you can grow grass anywhere! seed your lawn. seed it! and i get a lot in return with ink plus from chase i make a lot of purchases for my business. like 60,000 bonus points when i spent $5,000 in the first 3 months

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>> police in jackson, mississippi, were determined to find avis banks' killer she had been ambushed returning home from work. she was five months pregnant. >> we did take it kind of personal and we were also tasked with fighting for that five-month-old child who didn't have a chance to live in the world. >> she's my perfect child. i love all my kids but they were not like avis. >> the autopsy showed she had been shot four times with a .38 caliber pistol. she had also been stabbed numerous times. >> there were defacing injuries. whoever was doing this was

wanting to injure her physically, and her appearance, with the last and final slash to the throat, just extreme overkill. >> at first, investigators thought the motive was robbery but that theory was discarded when police realized the killer had taken time to open drawers but nothing had been stolen. >> to us, the scene appeared to be staged. we didn't find anything of value missing from the house. >> when keyon pittman was interviewed, they found blood on his shirt. dna tests showed the blood was avis's. the neighbor told police an interesting detail. that keyon always parked his car in front of the house and entered through the front door. but the night of the murder was different. >> this particular day, he raised the garage door when he got home.

we believe that he knew avis was in the garage. >> the background revealed that keyon was a player. >> he had a lot of girls was playing at the time. >> one of the women was 30-year-old brenda martin, a mother of one of boys that keyon coached. >> they were in the early stage of a relationship. that was in the form of flirting, telephone calls, things of that nature. >> brenda martin had no desire to talk to police. >> brenda didn't want to have anything do with this whole situation. because she was married, she was married with children. >> brenda denied any involvement in avis's murder and she had an aalibi at the time of the crime. >> we didn't have anything on her to put her at the scene or

anything. >> another love interest of keyon pittman was carla hughes, a cheerleader coach at the school. >> they had been seen kissing several times in a restaurant. >> carla hughes was the one that he was the most involved with, that he had i guess the most serious relationship and that he was seeing basically on a daily basis. >> carla hughes was a former beauty pagent contest ant and a three-year-old son. when questioned by police, she denied the affair. >> he's not a boyfriend. he's just a friend. nothing sexual with him. >> oh, no? >> no, no, nothing. >> i couldn't understand why carla hughes was lying initially. she didn't want to be in the mix of someone who had just been

murdered. >> people may have saw us being affectionate toward each other, but at the most that would have been a little kissing, but as far as like full-out blown romantic love affair, that's not what it was. it really wasn't. >> carla denied any involvement in avis banks' murder and was an unlikely suspect but she didn't have an alibi for the time of the murder. investigators believe the murder happened shortly after avis returned from work. >> she got home from 5:45. no evidence showed she stopped anywhere in between and the murder occurred somewhere between 5:45 and 6:00 that night. >> witnesses say keyon was at school running basketball practice at that time and his cell phone records confirmed he

was at the school between 5:30 and 6:00 p.m. >> we had the witness statements, but this again was independent verification through a separate source that he was, in fact, at basketball practice and he was miles away from the crime scene at the time we believe the crime occurred. >> but carla's cell phone records showed something else. >> those records showed that a little after 5:30 and again at roughly 6:05 that ms. hughes was in that area. that she was in the area at the same time that the murder occurred. >> and who was she calling? keyon pittman. [announcer] help him keep those muscles while he loses a few pounds with beneful healthy weight.

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>> police had two suspects in the murder of avis banks. her fiance, keyon pittman, had an alibi for the time of the murder but blood on his shirt and gunpowder residue on his hands raised concerns. >> we believe that the gunshot residue that was discovered on mr. pittman's hands was not placed there because he fired a weapon. we believe that that was transfer from him handling the body of avis banks.

>> just as the blood on his shirt. >> it was determined based off those visual examinations that the blood stains on him was from a touch transfer versus him actually being there and having evidence spattered on him at the time of the crime. >> if he had committed the murder, there probably would have been some blowback or some splatter on his clothing. the lab didn't find any. we have to realize that keyon wasn't around. keyon probably didn't do this and now we have to start looking at the other lover, that being carla hughes. >> although carla initially denied having a relationship with keyon, during her second interview with police, she changed her story. >> she did confess that she had lied to me and that they were sleeping together. >> six days into the investigation, police got a call from one of carla's cousins. >> he tells investigators that he has in his possession a

firearm that they believe was used in the death of avis banks. >> this cousin, patrick nash, said carla asked to borrow his gun, a .38 caliber revolver, for protection. >> she tells patrick that there's been recent break-ins at her house and she's concern for her safety. >> patrick said that three days before the murder, he gave carla his gun loaded with five bullets. he also gave her a hunting knife. three days after the murder, she returned the gun, but not the knife. and the chamber of the gun was empty. >> patrick asked carla, hey, what happened to the bullets in it and she told him i went target practicing. >> the gun was given to ballistics experts and test fired so that the pults could be compared to those recovered from avis's body.

>> the markings on the three projectiles from the body did match the markings from the test-fires which told me that that weapon was the weapon that killed avis banks. >> but this didn't necessarily put the gun in carla's hand. so investigators looked again at the shoe impressions from the crime scene. >> they assumed the impression was made by a man shoe which would have been a size 8. but it also could have been a woman's shoe, a size 10. with a warrant, investigators searched carla's apartment. >> we went through the master bedroom closet and carla had up ward 1700 pairs of -- 100 pairs of shoe in the closet. that was a needle in a hey tack. >> one pair looked promising. >> >> a picture we had from the crime scene, it appeared to be a perfect match, the same pattern.

>> investigators found no blood on the shoe it was disappointing. >> we decided to submit these shoes to a second laboratory. >> this time, they found several microscopic stains that appeared to be blood, and this time, dna testing confirmed what investigators already suspected. >> those shoes do in fact contain dna and were later to match the dna of avis banks. it puts her there in the presence of ms. banks at the time of her death. >> the only thing police needed to figure out was whether keyon pittman was involved. from capit, you earn unlimited 1.5% cash back on everything you purchase.

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. carla hughes had never broken the law and had no violence in her past. no one thought she was capable of murder. >> she led bible study. she led exercise classes. she was a leader and she's also a very pretty lady, somebody who you would never suspect to do something wrong.

>> but three years before the murder of avis banks, carla suffered an emotional blow. she was two months pregnant and about to be married to the baby's father. the day before the wedding, he called it off. >> carla hughes was a doormat for men. whenever she fall for a guy, she falls hard and most guys take advantage of her. >> investigators believe carla saw keyon pittman as the answer with to her problems. >> she wanted to be where avis was. >> prosecutors believe carla hughes wanted to eliminate the only person standing between her and keyon, avis banks. so she borrowed her cousin's gun and knife and went to the home

avis and keyon shared. she attempted to break into avis's home late in the afternoon by kicking in the glass on the back door, leaving remarkably clear shoe impressions. when this didn't work, she kicked in the doorjamb. once inside, she pulled out drawers to make it look like a robbery gone wrong, then waited for avis to return from work. cell phone records show carla placed her first call to keyon before the murder, most likely as she was staging the scene. no one knows what was discussed during that call. when carla heard the garage door open and avis's car pull in, she sprung into action. carla fired three shots. the fourth shot from close range, close enough to spatter

the tiny spec of blood found on her shoe. carla then used a hunting knife to stab avis repeatedly and cut her throat. after the murder, carla got rid of the knife and her bloody clothes and placed a second call to keyon shortly after 6:00 p.m. again, no one knows what was discussed. >> i'm just leaving practice now. >> what shocked me the most, this woman had a child. how could a mother do that to another woman and knew she was expecting? >> as for keyon pittman, he claims he played no part in planning or instigating the murder and carla never implicated him in the crime. some speculate he learned about the murders after they happened, but before he found avis's body. >> we felt like that there was

probably some conversation that night prior to keyon going home that led keyon to know that something had happened and carla probably told him, you said we couldn't be together, we can be now, i've took care of what was in our way. >> did you inflict those wounds on avis banks? >> no, sir. did you kill your unborn child? >>no, sir. >> do you know who did. >>no, sir >> we the jury find the defendant carla hughes guilty of capital murder. >> carla hughes was sentenced to life in prison without the possibility of parole. >> it's a love triangle gone bad. i don't know if a love triangle can go good but this one went really bad. >> carla hughes would have been a suspect anyway just based off the relationship she had with keyon. i don't know if we hadn't been able to tie her to the driem if

we didn't have the gun. >> we built our case on the ballistics, shoeprint impression, and dna evidence. without that, all of that there would have been a motive and there would have been nothing we could have charge and got a conviction on this case. >> up next, a teenage girl goes missing. >> this child had walked away in the darkness and disappeared. >> was she the victim of foul play or did she run off with a friend? >> it was horrible. people didn't know what to make of it. >> for weeks, there were many questions but no answers. >> something is not right. you know, it's too weird. >> until police find evidence of an encounter gone wrong. >> she would have put up a tremendous fight. >> this is good science. this is absolute good stuff.