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very small altercation between Jenn and Marcel. Just a normal siblings fight

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A normal conversation between friends. Indicated that they met up at some point

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A normal message from your boss at work. Nothing suspicious

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This seems like Marcel was having a dispute with Cam about Aiden, who seems suspicious. Its a very small dispute. It probably wont lead to anything

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A LOT of suspicions arise here. She straight up threatens him here. I will focus on her from now on.

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I think that the police should take Litrell into custody and question her more to see what answers she would give. Especially question her about that one threat that was found on Marcels phone, and what she meant by the message "youll regret it".

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...Cam says he last saw Marcel on Friday afternoon at 3:30 pm, just before Marcel left for work and Cam left town for the weekend to visit family. He and Marcel recently had an argument over Aiden.

...Aiden says he last saw Marcel on Friday afternoon at 3:50 p.m. in the parking lot of the Biotic Bistro restaurant, just before Marcel started his shift. Aiden and Marcel recently met and started hanging out a couple of weeks ago. Not much is known about Aiden; he doesn’t say much around others and tends to come and go frequently. Cam recently caught Aiden going

through one of the cabinets in the apartment he shares

...Kay says she last saw Marcel at their Friday shift at the restaurant; they both clocked out at 10:00 p.m. Kay recently accused Marcel of stealing her tips and threatened to go to their manager.

...Naomi last saw Marcel when he clocked out of his shift at 10:00 p.m. on Friday night. She contacted police when Marcel was a no-show for work two shifts in a row (Saturday night, Sunday morning). Naomi says she was aware Kay and Marcel didn’t get along but she didn’t know a reason for it. She says Marcel was a good employee and customers seemed to like

..Jenn says she last talked to Marcel on Friday night at 10:15 PM. Marcel called her on his way home from work. Jenn says the call lasted about 20 minutes and they argued about Jenn recently borrowing Marcel’s car.

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In question one, she has steady rates for both. (truth)
In question two, her heart rate becomes unsteady and has a big spike in the middle. Her respiratory rate has a large spike in the middle but decreases steadily. (truth)
For question three, she has a steady increase, but a quick decrease in respiration rates, and her heart rate has a slow decrease, then increases for a second, but then quickly decreases. This is weird but the question is stupid so I give her a pass.
In question four, shes somewhat steady for both rates, but, as per usual, the heart rate has small bounces here and there. (truth)
In question five, shes steady enough in both rates. (truth)
In question six, her respiration rate is steady and her heart rate is weird. small bounces in the beginning then a big bounce at the end. But, similar to the other suspects, I just believe this is because the question may be startling to hear. So i give her a pass (barely) (truth).

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In question one, his heart rate slowly increases and decreases but its nothing major. His respiration rate is steady. (truth)
In question two, he has a spike in respiration rate and an unsteady increase in heart rate, but its also nothing major. (truth)
In question three, his heart rate is unsteady and his respiration rate increases steadily. But this is a stupid question so I give him a pass.
In question four his respiration rate decreases very slowly and his heart rate  bounces, then increases steadily. hes stable here so i believe him (truth)
In question five, hes stable in both respiration and heart rates, although there's a bump in the beginning. (truth)
In question six, there's a big spike in respiration rate and an increase in heart rate in the middle of the graph that proceeds to increase. (might be a lie)

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In question one, she had a steady respiration rate and a very odd looking heart rate, but like I stated before, its probably due to nerves. (truth)
In question two, there was a spike in respiration, and jitteryness in her heart rate, but it seems to be stabling out. (truth)
In question three, she seems to be calming down and has a stable respiration and heart rate (for the most part) (truth)
In question four, her heart rate jumped weirdly, but her respiration rate is stable. (truth)
In question five both her heart rate and respiration rate slowly increased but its not completely all over the place, which leads me to believe she is okay here (truth)
In question six, she experiences a weird heart rate but steady respiration rate. Her heart rate here is more steady than what she experienced in the questions prior so I believe her here (truth).

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In question one, his heart rate was all over the place, but his respiration rate was steady. (truth)
In question two, I noticed his heart rate was becoming more steady, but it was still spikey. his respiration rate was steady (truth)
In question three he was calming down and his rates were for the most part steady. (truth)
In question four, his rates were steady but his respiration rate had a spike near the end. (truth)
In question five, he had a big spike in respiration middle end and his heart rate went straight up at the end. (not enough to tell if lie)
In Question six  his heart rate became unsteady, but his respiration rate was steady. (truth)

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For Question one, she had sort of a crazy heart rate, but we can assume that was because she was super nervous. (truth)
For Question two, she had another crazy heart rate, but these questions aren't important to the case and are simply just to test her so we can also conclude this as just her being nervous. (truth)
In question three she seemed to be calming down and there wasnt any huge change in either rates. (truth)
In question four she had a somewhat steady respiration rate and had a weird spike at the end of her heart rate. (truth)
In question five, her heart rate was odd and all over the place. Her respiration rate was  rushing upwards. (truth)
In question six she had a heart rate that was rushing upwards but then slowly became steadier. her respiration rate was slightly odd. (truth)

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32 years old, female; Marcel Newgard’s supervisor at the Biotic Bistro restaurant
Polygraph says:

1. Is your name Naomi Lee? (Answer: Yes)

2. Are you 32 years old? (Answer: Yes)

3. Do you have black hair? (Answer: Yes)

4. Are you Marcel Newgard's supervisor? (Answer: Yes)

5. Is Friday at 10:00 p.m. the last time you saw Marcel? (Answer: Yes)

6. Did you kill Marcel? (Answer: No)

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25 years old, male; a new friend of Marcel Newgard
Polygraph says:

1. Is your name Aiden Santori? (Answer: Yes)

2. Are you 25 years old? (Answer: Yes)

3. Do you have brown hair? (Answer: Yes)

4. Are you friends with Marcel Newgard? (Answer: Yes)

5. Is Friday at 3:50 p.m. the last time you saw Marcel? (Answer: Yes)

6. Did you kill Marcel? (Answer: No)

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22 years old, female; Marcel Newgard’s coworker at the Biotic Bistro restaurant
Polygraph says:

1. Is your name Kay Litrell? (Answer: Yes)

2. Are you 22 years old? (Answer: Yes)

3. Do you have brown hair? (Answer: Yes)

4. Are you Marcel Newgard's coworker? (Answer: Yes)

5. Is Friday at 10:00 p.m. the last time you saw Marcel? (Answer: Yes)

6. Did you kill Marcel? (Answer: No)

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23 years old, male; Marcel Newgard’s roommate
Polygraph says:

1. Is your name Cam Banks? (Answer: Yes)

2. Are you 23 years old? (Answer: Yes)

3. Do you have black hair? (Answer: Yes)

4. Is Marcel Newgard your roommate? (Answer: Yes)

5. Is Friday at 3:30 p.m. the last time you saw Marcel? (Answer: Yes)

6. Did you kill Marcel? (Answer: No)

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20 years old, female; Marcel Newgard’s younger sister
Polygraph says:

1. Is your name Jenn Newgard? (Answer:  Yes)

2. Are you 20 years old? (Answer: Yes)

3. Do you have blond hair? (Answer: Yes)

4. Are you Marcel Newgard's sister? (Answer: Yes)

5. Is Friday at 10:15 p.m. the last time you talked to Marcel? (Answer: Yes)

6. Did you kill Marcel? (Answer: No)

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Jenn Newgard
Cam Banks
Kay Litrell
Aiden Santori
Naomi Lee

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Marcel is seen laying face down on his garage floor, in front of the interior of the garage door beside the back of his car. there's blood on his forehead and a baseball bat parallel to his body. His phone laying next to his body
I think he mightve been killed by the baseball bat

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When the medical examiner arrived at the scene at 2:30 p.m., they noted fixed lividity on the front side of the body, no signs of rigor mortis, and green discoloration of the body. The medical examiner recorded the decedent’s rectal temp as 93°F and noted that the ambient temperature inside the garage was 93°F.

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Pretty much everything points to Kay Litrell, and to be honest, i was suspecting her ever since i saw those messages exchanged between the two. I think that Naomi is completely clear of all suspicion, I believe Jenn is innocent because she showed no signs of being the perpetrator, and Cam is only suspected by me because his fingerprints were found on the baseball bat. But thats most likely because it is his in the first place. Aiden and Litrell are left suspicious. I dont know why Aiden was snooping around Marcel and Cams place, but I believe hes innocent because Marcel called him his friend and said it was okay. But Litrell and Marcel have always been in bad terms, so its easier for me to believe it was her.

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Overall, im most suspicious of KAY LITRELL.
I feel this way because she pretty much called Marcel out for something he most likely didnt do. I believe Naomis words about Marcel because shes the SUPERVISOR at the restaurant. PLUS all of her DNA matches what was found at the scene. Brown hair,  the gum, and same blood type. She also THREATENED MARCEL in an email.
But then again, the hair might belong to Aiden, since he was the one that was looking around in Marcels house, his hair might of fell in the area when he was there. And Cams fingerprints were found on the baseball bat, but that ALSO might be because it belongs to him since they live there together.

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Marcel Newgard was found dead in his garage during a welfare check. Medical personnel at the scene confirmed that he was dead on arrival at 2:00 p.m. Sunday afternoon.

Insects were found on the decedent’s face. The insects were identified as blue bottle flies. They were photographed for further examination.

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The brain MRI and heart seemed unimportant because they were completely fine.
Marcel also seemed to of had a screwed up tooth that he was going to the dentist for

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His brain MRI looks normal

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The spatter DNA matches Marcels DNA.
The gum DNA matches Kay Litrells DNA

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The fingerprints found on the Baseball bat  match Marcels fingerprints.
But there are other fingerprints found on the baseball bat that match Cam Banks

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The results tell us that he had  65 mg/L of caffeine , 30 mg/L of organocarbamide, and 20 mg/L of Acetaminophen in his bloodstream.
Organocarbamide is a chemical commonly used as a rodent killer, can cause serious health consequences including muscle spasms and paralysis to name a few.
Acetaminophen is a pain reliever that contains caffeine.

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Cam Banks and Naomi Lee have the same hair color (Black)
Kay Litrell and Aiden Santori both have the same hair color (Brown)
Jenn Newgard and Marcel Newgard have the same hair color (blonde)
---The hair found at the scene was BROWN.

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I believe the heart looks normal

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Marcel, Kay, and Jenn all have B type blood.
Cam has O blood, and Naomi has A blood.
The spatter was type B blood.

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found dead in his garage. His death appears suspicious...