Take 5 crime file:
Nurse Sherri Rasmussen was a 29-year-old at the start of her exciting new life.
Sheโd recently married the love of her life, John Ruetten, and the couple lived in an apartment in a gated complex in Los Angeles, USA.
Then, three months after their wedding, she was shot to death.
The crime scene appeared like a botched burglary.
Her living room was ransacked and her BMW was gone.
Sherri had been beaten and shot three times during a struggle that left her with a bite mark on her arm.
A swab was taken, but at the time, DNA hadnโt yet been used to solve a case.
Shortly after Sherriโs death, another nearby home was burgled.
Police suspected two unidentified Latino men as the culprits for both crimes, but no arrests were made and Sherriโs case went cold.

Sherriโs family fought hard for justice.
(Image: Getty Images)Her husband, John, and the family were heartbroken and desperate for answers.
So much so that her dad, Nels, began to play detective.
He remembered a disturbing story his daughter had told him before her death.
Sherriโs husband, John, had an ex-girlfriend, an LA Police Department officer, who had aggressively confronted her at the hospital where she worked.
โIf I canโt have him, nobody can,โ Stephanie Lazarus told Sherri.
Nels wrote a letter to the police chief and relayed the story, asking them to look in to the ex-girlfriend and cop.

John getting emotional in court.
(Image: Getty Images)โYouโve been watching too much television,โ was allegedly the response he got from officers.
Years later, Sherriโs case remained cold.
But with the rise of DNA fingerprinting, Sherriโs parents offered to pay for private DNA analysis.
But they were refused.
Not long after, a different LAPD officer signed out the evidence in Sherriโs case and it was never seen again.
As the case sat cold, Stephanie Lazarusโs career thrived.
She received multiple promotions and commendations.
She even went on to become a detective in the same jurisdiction as Sherriโs murder.
Whatโs more, Stephanie and John had a romantic encounter.
Finally, 18 years after Sherriโs death, evidence was re-examined as DNA technology improved.
Saliva from the bite was identified as female.

Saliva from the bite was female.
(Image: Getty Images)And in the file were reports of a woman called Stephanie harassing Sherri before the murder.
But Stephanie was a popular detective and no-one took her involvement seriously.
The case went back to the archives, until five years later when it was re-opened by new investigators.
They began to think the burglary was staged.
Finally, they turned their attention towards Stephanie Lazarus.
They discovered Stephanie and John dated until he met Sherri.
He considered their relationship casual, but Stephanie had not.
She wasnโt able to accept John had moved on and constantly contacted him.
They even slept together when he and Sherri were a couple.
Stephanie wrote to Johnโs mother to declare her love for John.

Stephanie was a popular detective.
(Image: Getty Images)Then, she went to Sherriโs work to tell her if she couldnโt have John, no-one would.
Officers hatched a plan to bring Stephanie in for questioning.
They invited her in on the pretext of needing her help on a case.
Once in the room, as the following extracts from that interview show, the killerโs ability to evade justice was finally up.
WATCH: Chris Dawson is questioned over his wife Lynโs disappearance. Post continues after videoโฆ
Stephanieโs incriminating interview:
DJ: Dan Jaramillo
G.S: Greg Stearns
S.L: Stephanie Lazarus
DJ: โWeโve been assigned a case and there are some notes as far as your name being mentioned. Do you know John Ruetten?โ
S.L: โDo you mean John Rut-ten? I went to school with him. I went to UCLA โ 1978, I started, and I met him in the dorms.โ
D.J: โWere you friends?โ
S.L: โVery close friends. Whatโs this about?โ
D.J: โItโs a case weโre working on that involves John. In the things weโve reviewed, thereโs stuff that he knew about you.โ
S.L: โWe lived in dorms for two years.โ
D.J: โWere you just friends or anything else?โ
S.L: โWe were good friends.โ
D.J: โWas there any kind of relationship between you?โ
S.L: โYeah, we dated. Whatโs this about?โ
D.J: โItโs relating to his wife. Did you know her?โ
S.L: โNot really. I knew he got married years ago.โ
D.J: โDid you meet her?โ
S.L: โGod, I donโt know.โ
D.J: โYou said that you dated John. How long did you guys date?โ
S.L: โWhat? Is this something?โ
G.S: โStephanie, hereโs the situation. We knew when we saw this chronology that maybe there was some relationship there. We didnโt want to come up to you at your desk and ask those kind of questions.โ
S.L: โItโs been a million years. I couldnโt even tell you the last time I talked to him. It was a weird relationship. I canโt say he was my boyfriend. I donโt know if he would have considered me his girlfriend. We dated.โ

Stephanie in court.
(Image: Getty Images)D.J: โYou met his wife?โ
S.L: โI may have.โ
D.J: โDo you remember her name, what she did for a living, where she worked, or anything about her?โ
S.L: โI think she was a nurse. I canโt remember how he said he met her. Itโs been so long.โ
D.J: โDo you know what happened to his wife?โ
S.L: โI know she got killed.โ
D.J: โWhen did you hear about that?โ
S.L: โI saw a poster at work.โ
D.J: โWhen you heard about Johnโs wife being killed, what was your reaction?โ
S.L: โI called the family. I called some of his friends I knew. Obviously, itโs shocking to hear.โ
D.J: โDo you know what the circumstances were regarding her death?โ
S.L: โI donโt know if it was a burglary or something? I can faintly think I may have seen a flyer. It may have had her picture on it. If somebody called me, I may not have known what her last name was.โ
D.J: โDo you know the first name?โ
S.L: โShelly. Sherri? Something. Like I said, itโs been so many years.โ
D.J: โDo you remember ever talking to her?โ
S.L: โI may have. Iโm thinking I may have met her, now you guys are bringing up all these memories. Because he would date other people and I would date other people, and I think he may have been dating
her. Maybe he was married. Now Iโm thinking, I may have gone to her and said, โHey, you know what? If heโs dating you, he is bothering me.โ
D.J: โAt work or their house?โ
S.L: โIโm thinking it was a hospital in LA. What year was that? Iโm trying to think. When did you say they got married?โ
D.J: โIt was in โ85 or โ86, something like that.โ
S.L: โI could have been working in Hollywood. I went and talked to her and said, โHe is dating you, he keeps calling me, why donโt you tell him to knock it off?โ
D.J: โWhen you talked to her, was it civil?โ
S.L: โThe conversation lasted a few moments. It wasnโt like we went to lunch or anything.โ
D.J: โSo, you would more than likely have gone to her work and had this discussion?โ
S.L: โNow you guys are bringing this stuff up, that sounds familiar. But what does it have to do with me dating him and her being killed? I donโt have anything to do with it.โ
G.S: โLike I said, we got this the other day and weโre going through it and we see your name.โ
S.L: โThen you saw I work next door.โ
G.S: โRight, we recognised the name and we know you work next door to us, and so weโre trying to get some background, trying to figure this all out.โ
D.J: โLet me ask you this: did the detectives ever reach out to you?โ
S.L: โNo one ever talked to me about himโฆ No, Iโm thinking maybe I did talk to a detective. What division was it?โ
D.J: โVan Nuys.โ
S.L: โYou know, Iโm thinking I did speak to somebody.โ
G.S: โDid you visit the coupleโs home?โ
S.L: โI donโt think Iโve ever gone there. I donโt want to say Iโve never gone there and (have you say) I was there at a party. But I donโt think so.โ
G.S: โBut itโs safe to say the only time you would have was for something social?โ
S.L: โYeah, I donโt even know if I knew where they lived.โ

Stephanie Lazarus.
(Image: Getty Images)D.J: โBut you didnโt have any issues with her?โ
S.L: โNo. But I mean, if he were dating me and dating her, I probably said something. I canโt say we never screamed or yelled. I donโt think we had some huge blow-up.โ
D.J: โWould you remember if she snapped at you, like, โHey, thatโs my man. Leave him alone.โ That kind of stuff?โ
S.L: โMaybe that happened, itโs been so long. People think Iโm hyper, and I can get upset, you know, and I forget five seconds later.โ
D.J: โHow about going to her house and having a dispute?โ
S.L: โMaybe I couldโve met her at the apartment, but Iโm thinking the hospital sounds familiar, that I met her there. I donโt think I ever met her there or him there.โ
D.J: โWeโve read the notes (from) Sherriโs friends saying you guys had words and it got heated. The reason we are asking you is there was an incident at her work, and they told us (there was) an incident
at her house.โ
S.L: (Shaking her head and smiling) โThat does not sound familiar. Was John there? Did John say this happened? And other people were there?โ
D.J: โThis was an incident where you showed up, you werenโt supposed to show up, and things got heated.โ
S.L: โAt his house? That doesnโt sound familiar.โ
G.S: โDid you ever fight with her?โ
S.L: โHave we ever fought?โ
G.S: โYeah. Did you ever duke it out with her?โ
S.L: โNo, I donโt think so.โ
G.S: โYou would remember?โ
S.L: โYeah, I would think so. I mean, what are they saying? I fought with her, so I must have killed her? I mean, come on.โ
D.J: โOK, this occurred in โ86, right? The detectives processed the scene, they did fingerprints and all that stuff. They did the best they could at the time, and they looked at a lot of people and
different things.โ
S.L: โIf you guys are claiming Iโm a suspect, Iโve got a problem with that. If youโre doing this as an interrogation, Iโve got a problem. Youโre accusing me of this?โ
G.S: โWeโre just trying to figure out what happened, Stephanie.โ
S.L: โDo I need to get a lawyer?โ
G.S: โYou donโt have to. Youโre here of your own free will. Youโre not under arrest. You can leave whenever you like.โ
D.J: โIf we asked you for a DNA swab, would you be willing to give us one?โ
S.L: โMaybe, because now Iโm thinking Iโm probably going to need to talk to a lawyer. I know how this stuff works. I wish I had been recording this, because it sounds like all of these people are saying I
was fighting with her. Now you sound like you are trying to pin something on me. I got that sense.โ
D.J: โYou know as well as we do, our job is to identify and eliminate suspects.โ
S.L: โI canโt believe it. Iโm shocked someone would be saying I did this. We had a fight so I killed her? Come on.โ
At this point, Stephanie walked out of the interrogation and headed down the hallway, but was stopped and arrested.
Lazarus had murdered her love rival and Sherri hadnโt stood a chance.
During the prosecutorโs closing statement, he said, โThis wasnโt a fair fight โ this was prey caught in a cage with a predator.โ
In March 2012, Stephanie was convicted.