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Simplified Forensic Criminalist
The famous singer Ava ABCD was found dead in her house. Please help the police to find out the killer...
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Step 1: Murder or Suicide or Cannot be determined: Ava ABCD was found dead on her sofa. There were traces of the strangulation tool on her neck. The table in fornt of her was kicked over and all bottles, tissue boxes, and other stuffs fell on the floor. We found her own skin fibers in her nails. We identified this as......
Step 3: Specific time since death: The measured corpse rectal temperature is 32°C. Using the equation time since death = (normal body temp - corpse rectal temp)/cooling rate °C. (The normal body temperature is 98.6°F, which is 37°C. Warm weather cooling rate: 0.5°C/h, normal weather cooling rate: 1°C/h, cool weather cooling rate: 1.5°C/h).
Step 4: We investigated all people who had contacts with Ava ABCD recently. We asked about where were they when Ava died. Based on the time since death and these people's alibis, we found these suspects......
Alex A: Ava ABCD's teacher and friend, who was attending a seminar when the crime occurred. The meeting place was very far away from Ava ABCD's house. More than 100 people could testify.
Roy R: Ava ABCD's firend, who claimed that he stayed at home all day long. No one can testify
Ben B: Ava ABCD's new friend, who claimed that he was walking his dog in the neighborhood. No one could testify.
Lucas L: Ava's ex-boyfriend, who claimed that he was at a birthday party when the crime occurred. More than 20 people could testify.
May M: Ava ABCD's boss, claimed that she was at gym, but no one remembers seeing her there.
Jessica J: Ava ABCD's assistant, who calimed that she went to Japan for a bussiness trip last week and went back 30 minutes ago. Her 2 colleagues could testify.
Step 5: The killer: we found ...... is most likely to be the killer since he/she has the strongest motive to commit the crime.
Roy R: had conflicts with Ava ABCD three days ago. Roy wanted to borrow money from Ava, but Ava refused.
Ben B: Ava ABCD's new friend, who she recently met at a club. They are not close friends.
May M: Ava ABCD's boss, who awarded Ava ABCD a bonus recently.