Hair Investigation

Based on the evidence collected at the crime scene and the subsequent analysis, we concluded Mr. Marquez committed this crime. We conducted a series of tests and analyses: a burn test, a microscopic fiber analysis, and a microscopic hair analysis. These tests and analyses all pointed to Mr. Marquez.
Under the microscope, the fiber found on the crime scene looks exactly the same as a wool sample. They are both off-white with little strands wrapping around to create a bigger fiber. Additionally, we compared the two fibers in a burn test. In this test, both fibers produced a similar scent as they burned; they both smelled like burning hair. They both burned slowly and left the same residue, a black bead. Knowing that these are properties of wool and that the fiber had the same reaction to the fire as the wool itself, we have concluded that the fiber found at the crime scene is wool. This means that the perpetrator was likely wearing wool when they committed the crime. Looking at all six of the suspects, only one of them was wearing garment made of wool. …show more content…
Of these two hair fibers, one of them belonged to a human, and the other belonged to an animal. We believe that the animal fiber belongs to either a guinea pig or a rabbit. This animal fiber was compared with hair samples from the suspects’ pets. Only two of these pets’ hair looked similar to the fiber found at the crime scene. The hair samples from the guinea pig and the rabbit looked identical to the animal fiber from the crime scene. They all had a very intricate cuticle, as well as green and purple throughout the hair. This means that the person who committed the crime had recently been in contact with either a rabbit or a guinea pig. Three of the suspects own either a rabbit or a guinea pig. Suspect one, Mr. Marquez, owns a rabbit. Suspect three, Ms. Moneypenny also owns a rabbit. Suspect four, Ms. Lopez, owns a guinea