Inside a Mock Homicide Case: What Michelle Khare Learned About How Crimes Are Actually Solved

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Overview

In this episode of Challenge Accepted, Michelle Khare works through a staged homicide investigation alongside working forensic and investigative staff in San Diego. The question behind the challenge is how closely the crime shows audiences have "seen a million times on TV" match the real process. Khare follows the case from the crime scene through forensic analysis, ballistic comparison, fingerprint identification and a suspect interview. Along the way the experts keep pointing out where television gets it wrong: the work is slower, more methodical, and depends on many small steps that rarely make it to the screen.

13 min read

The guides are Lisa Merzwski, a supervisor in the Firearms unit; Heidi Hebert, a crime scene specialist; and Ricky Escalante, a homicide detective responsible for the first-line investigation. The case is a recreation, and the suspect is played by an actor.

1:00

Reading the Scene: Looking for What Doesn't Belong

The investigators explain that they arrive already knowing what the call was and where the victim is. The job at the scene is to look for "things that don't belong" and anything that isn't natural. Khare's first observation is blood on a car. The investigators read the staining as consistent with a gunshot wound, with the body hitting the car and sliding down.

Bullet casings are found in the car, and one item turns out to be an actual projectile. When asked where the shooter might have stood, Khare suggests a spot behind the car, and the investigators accept that as a possibility. Then a significant find: a gun hidden in a tire, potentially the murder weapon. Khare admits it is hard to stay professional. As a child she wanted to be a detective after reading The Boxcar Children and Nancy Drew. Khare also describes an uneasy balance between the thrill of finding a clue and the shock of imagining the scene as real.

The investigators then ask Khare to put herself in the shooter's position and work out where shell casings would land under different theories. They don't yet know where the shooter stood, and the number of casings shows that multiple shots were fired.

The reporting party (RP), the victim's girlfriend, lives on the first floor of the building. From this evidence Khare forms a first working theory: the perpetrator fired five shots from the front stoop, stashed the gun in the tire and fled. Because the girlfriend's 911 call seemed suspicious to Khare, the girlfriend becomes her number one suspect.

3:31

Documenting Everything for the Jury

Next, each item of evidence gets a numbered placard and is photographed. The specialists describe shooting at 90 degrees one way and 90 degrees the other, and capturing the spatial relationships between items. They stress this because these images are what will be projected in court, and the jury has to be shown what investigators saw. One of the investigators mentions taking 797 photos during a couple of search warrants earlier that week. Khare jokes that Instagram influencers take that many for a single picture.

Between tasks the conversation turns to the emotional side of the job. Khare asks whether it is scary or sad. The answer is that parts of it can be sad, but it helps to think about how much good the work does. Escalante says he is glad to have a partner because he usually does this work alone. The investigators say partnerships matter: partners play off each other and learn to anticipate what the other is doing and thinking. Khare decides the real objective of the challenge is a "best friends level" relationship with her partner. She starts working out a secret handshake with Escalante, which becomes a running joke for the rest of the episode. Its catchphrase, "assess the scene," survives several revisions, and a spin is dropped for safety.

5:09

Handling the Weapon and the Real Pace of Scene Work

Khare retrieves the gun from the tire herself and says it feels "really bizarre" to touch a weapon knowing that an hour earlier someone used it to end a life. The investigators have her check the headstamps on the cartridges, which read "R-P Luger," and confirm that they are all consistent.

The episode then addresses one of TV's biggest distortions, which is time. Scenes like this can take upwards of 10 hours to process, and more complex cases can reach 35 hours of on-site processing. Escalante describes the workload: six homicide teams of five detectives each that he rolls with, and at times six homicides at once in San Diego. One team member says they sometimes see Ricky more than their own husband.

6:45

The Lasers Change the Theory

To reconstruct the shots, the team attaches lasers to trajectory rods inserted through the bullet holes in the car and uses fog to make the beams visible. The lasers trace the bullets' paths back to the second-floor balcony, not the stoop.

This overturns Khare's theory. The cartridge cases on the ground made it seem like the shooter was on the first floor. The trajectory instead points to the second story, and the girlfriend lives on the first floor. When Khare suggests it might not be the girlfriend after all, the firearms expert declines to speculate on who the suspect is. Their opinion and interpretation cover only one point: the shots came from the balcony. With no strong suspect left, the investigation turns to the forensic evidence collected at the scene.

7:54

Processing the Gun for Prints: Contamination and Superglue

The narrative then jumps ahead two days. The handgun, one bullet and six cartridge cases have been collected, and the autopsy was done the day before. Khare's job is to process the gun for DNA and fingerprints. She says she is nervous, because what is found could decide whether someone goes to prison and whether the right person is caught.

She makes beginner's mistakes immediately. She is told she can hold the grip because no prints will be there. Then she lays the gun on a dirty surface right after being told not to. She admits she would have ruined a real case, and says she is glad this is a mock scene.

A visual inspection under light shows nothing that looks like a classic fingerprint. The gun then goes into a cyanoacrylate ester (superglue fuming) chamber. As the specialist explains it, the chamber raises the humidity and a hot plate heats a small amount of glue until it evaporates into a fume. The fume fills the chamber and fixes prints to the gun, so prints that couldn't be seen become visible. Afterward far more prints appear. Khare observes that the glue adds contrast, and the specialist agrees.

Only then does the familiar TV step happen: brushing powder over the prints and lifting them with tape. Under the light again, the prints have come up. The lifts are impounded in property and sent to the latent prints unit to see whether they identify anyone.

9:31

A Case That Took Four Years

While the gun is fuming, Khare asks about the most meaningful case the specialist has worked. In 2009, a young girl was found murdered in an abandoned house, and the team spent probably over a month processing that scene. An arrest came four years later, and the man was convicted. After testifying, the specialist walked into the hallway and a man approached and said he was her father. He hugged the specialist and said he had no idea how much work investigators put in. The story shows the slowness and persistence that, according to the episode, television tends to compress.

10:50

The Firearms Unit and Ballistic Fingerprints

While the latent prints are processed, the next step is confirming that the gun from the scene actually fired the shots. Merzwski shows Khare the Firearms unit's reference collection. It runs from revolvers and tiny semi-automatic pistols to very heavy weapons, a belt-buckle gun and a grenade launcher. The collection exists for training, and so examiners can recognize and testify about any type of weapon, from black-powder muskets to fully automatic firearms.

The episode explains that a fired gun leaves microscopic marks on the bullet and cartridge case, which work like ballistic fingerprints. Because a bullet was recovered at the scene, the suspect gun can be test-fired and the marks compared. Khare fires the gun into a water tank, which catches the bullet in pristine condition without altering its markings, while a separate device captures the cartridge case. Khare compares the tank to the ice bath she uses for boxing. The test bullet shows the lands and grooves left by the barrel.

12:56

Under the Comparison Microscope

A comparison microscope lets an examiner view two items at once, almost like an overlay. The scene evidence sits on the left and the test fire on the right. Khare's first impression is that they look like a match but seem slightly off, and she isn't sure whether that matters. Merzwski says that is what you would expect. She points out the firing pin impression and the breech face markings, including marks from the drag of the firing pin. These marks support the conclusion that both cartridge cases were fired by the same weapon. The cartridge cases from the homicide scene came from the recovered gun.

14:17

Fingerprint Matching Is Not One Button Press

The episode makes another correction to TV here. A fingerprint match is only possible if the person's print is already in a database. The search itself can take upwards of several hours, depending on how narrow or wide the parameters are.

A latent print examiner shows Khare what examiners look for. A bifurcation is where one ridge splits into two, and an ending ridge is where a ridge abruptly stops. Examiners look for these features next to each other. The comparison print came from a DMV record. Khare asks whether the result is conclusive. The examiner's phrasing is careful: the impression from the magazine "has been identified to this DMV record." That identifies who handled the gun, and the next question is how the print got on the magazine.

15:18

The Interview: Rapport First

Khare asks whether this is the good cop/bad cop part and whether she gets to slam the table. Escalante says no to the table. He says the first goal is to build a comfortable rapport and draw out information critical to the investigation. They plan to stay "good cop" the whole way, with the truth as the only aim.

The suspect, Norman, says he spent March 15 at a movie at a Century Cinema on the west side with a woman named Brooke. He knows the victim, Chris, as his neighbor. He doesn't know Chris's girlfriend personally but says the couple fight a lot and loudly. He says he last saw Chris about three days earlier. When told Chris was shot in front of his apartment, and reminded that surveillance cameras are everywhere, he denies knowing anything. He also remarks that Chris doesn't sound like he was a great guy.

18:17

The Break, and Pressing on the Alibi

The investigators step out to confer. Khare says it was intense and that she is no longer sure he's the right person. Escalante notes that the suspect seemed a little shifty when Chris came up. Their plan is to challenge the movie story: there's no record of a debit card purchase for a ticket. Back in the room, Norman suggests he paid cash or got mixed up. When told Brooke said she wasn't with him that Wednesday, he changes his account. He was home and heard the couple fighting.

The investigators then offer an opening. If he was defending the girlfriend in a legitimate self-defense situation, they could look into it and corroborate it. They ask who seemed to be the aggressor and tell him this is a pivotal moment. He says he saw Chris chase his girlfriend into the street and attack her, but insists he didn't kill him. That slip becomes the turning point. Escalante points out that they never told him Chris had died. Norman says he can't claim to be upset that it happened.

20:37

Confronting With Confidence

During a second break, Escalante coaches Khare. If she is confident he did it, she should look him in the eye and say so. Khare goes back in and lays out the facts. His fingerprints, and only his, were on the gun, and the trajectory leads to his balcony. She says she isn't asking whether he did it but why. She needs to know whether she's facing a killer with no regard for anyone or a decent person who walked into a situation and tried to do the right thing.

Norman confesses. He says he saw Chris chase the girlfriend into the street and hit her, and he believed Chris was going to kill her. He says he grabbed his gun meaning only to scare him, then couldn't stop and kept shooting until Chris was on the ground. Khare thanks him for telling the truth, and the scenario ends.

22:44

What TV Leaves Out

Khare says the interview was "so hard." Her takeaway is that Hollywood shows complex cases solved with a single touch of a button. What it doesn't capture is how hard these investigators work: the hours of scene processing, the documentation for court, the slow print searches and the careful limits on what an expert will claim. The episode ends with one last loose end. Khare and Escalante finally perform the finished secret handshake, ending on "assess the scene" and "partners in crime."