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On a Monday night, a young woman called the police, letting them know that her dog was kidnapped. She explained to the police that she was at home asleep when someone broke into her home. The person took her dog, as well as all of her money from her wallet. The burglar left a ransom note telling the woman that she would not get her dog back until she brought $1,000 to a special location. Other CSI agents and I arrived at her house to collect any evidence.  I noticed the ransom note the burglar left, as well as multiple fingerprints on a glass table the women had. The other CSI agents searched through the woman's house in hopes of finding other evidence. Still, the only evidence we have so far is the ransom note and a couple of fingerprints. I will take pictures of all the evidence we have before we collect it and draw a quick sketch of the crime scene. As I was photographing the scene, other CSI agents began to collect the fingerprints using carbon powder and tape. Below is an image of the dog that was taken.

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CSI agents, including myself, decided that we need to collect the fingerprints we found on a glass table. We first take photographs of the fingerprints. Pictures of the fingerprints are taken to preserve the prints. The best way to preserve fingerprints is by taking photos. We then place carbon powder on the prints. Carbon powder is a powder that is used for dusting a surface that has a fingerprint. The powder sticks to the sweat/oil. The sweat/oil left behind from the fingerprint is what creates a fingerprint because of the secretions left from your finger. The sweat and oil allow you to get the print using tape. The type of fingerprint we found is a loop. A loop fingerprint is a pattern that contains ridges that curve up and then down in the same direction. The fingerprint we found contains many different types of minutiae. A minutiae is a place where ridges on a print come together or split. The fingerprint we found will be very helpful with this case. Below is an image of the fingerprint we found.

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The fingerprint we found at the crime scene is a loop fingerprint. We know that it is a loop fingerprint because, on the print, it has one delta and ridges that enter and leave on the same side. The characteristics of this print allow us to identify this print as a loop fingerprint. Below is the fingerprint with labeled minutiae.

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The other CSI agents and I next decided that we would analyze the ransom note left at the crime scene. The ransom note is considered a questioned document. It is regarded as a questioned document because it is a document that is being analyzed from the crime scene. If we can find any more writing, possibly from the burglar, we will compare the documents. Whenever we get a possible suspect, we will have the person write an examplar. An exemplar is an authentic sample of handwriting that can be used for comparison of a questioned document.

Another thing we are planning on doing is paper and ink examination. We will be looking at the paper the ransom note was written on and examining the ink on the paper during a paper and ink examination. Identifying what was used to write the ransom note will be very beneficial to this case. If we can identify the pen used to write the ransom note, we will use chromatography to ensure that we have the correct pen. Chromatography is when ink is separated into various pigments. We will also have the ransom note examined by a graphologist. Graphology is used to try and determine the personality traits of the person writing the note. While the document is being analyzed, the graphologist will be looking at the baseline habits and line spacing on the note. Baseline habits are whether the writer writes above, below, or on the line of a paper. Line spacing is how far apart or close together the lines of writing are. All of these factors together will be very helpful in the case.

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Dog-
https://www.akc.org/most-popular-breeds/
Fingerprint-
https://www.researchgate.net/figure/Fingerprint-ridges-showing-a-loop-pattern-19_fig3_228359468