Let’s catch up with our law enforcement officer Detective Claire, who is investigating a series of jewelry thefts all over New York City. Claire has a suspect in mind but must find proof before she can charge the suspect in the crimes. As part of her investigation, Claire will need to interview a variety of experts, including some from the Government and Public Administration and the Human Services career clusters. Let’s work along with Claire to gather and assess data, (or clues) about the crimes and see if they connect with her suspect. Claire was first assigned to this case after an upscale jeweler opened his shop one morning to find several display cases empty. Distraught, he phoned police. After Claire arrived, she ordered techs to look for fingerprints and video surveillance footage. She had the owner list the stolen items so that if the thief tried to sell them nearby, police would be on the lookout.

Here is the list of stolen items the owner made, along with the value of items stolen:
TABLE 1 Stolen item list
Stolen Item

Price per item

Qty

Total Value

5-carat diamond necklace

$32,995

1

Emerald and diamond tennis bracelet

$19,999

3

3-carat diamond engagement ring

$25,560

5

Mother of pearl necklace

$69,000

2

Men’s gold watch

$25,850

4

Unfortunately, the smart thief wore gloves, so no fingerprints were recovered from the scene. They also wore a black balaclava to cover their face, so Claire had almost no data about the thief’s appearance to work with.

Math Problem #1
Copy the table above to your math paper and calculate the total value of items lost in the first jewelry heist.

Over the following year, there were six more heists throughout the city, with total goods stolen valued at $3.75 million. Each time, the thief left no fingerprints and always wore a mask to hide their identity. The last heist did uncover one valuable clue, though. As the suspect was filmed loading the jewelry into a black duffel bag, Claire caught a glimpse of a label. When she had the tech team focus in on the bag’s label, Claire found that it was the bag from an expensive French designer.

This clue led Claire to believe that the suspect must be someone who traveled internationally, particularly to France. She reached out to James, a contact in the Foreign Service sector, who was able to verify that French and British authorities had been investigating similar crimes in their countries. James was able to forward their police reports, including this list of the value of items stolen:

TABLE 2 Stolen item values
Police Report

Total Amount of Goods Stolen

Exchange Rate

Total in USD

France

2.5 million Euro (€)

1 € = $1.13

England

4 million Pounds Sterling (£)

1 £ = $1.26

Math Problem #2
On your math paper, calculate the total amount of goods stolen in France and England in US dollars. Then, add the total to the money stolen in Claire’s cases to find the thief’s total haul.

Good news! The authorities in France and England have made some progress: they’ve been able to coordinate the robberies with passport stamps from an American flying into and out of their country. James forwarded the name on the passport and Claire was able to run it through the system in her own police precinct. The only record that popped up was one from Ocean Recovery, a mental health facility right there in New York City.

Claire went to visit Alannah, the director of admissions at Ocean Recovery. Alannah explained to Claire that she could not divulge information about the suspect’s treatment while under their care. She could, however, confirm the dates of care. Perhaps comparing the dates that the suspect was in the care facility with the dates of the thefts would be helpful. Alannah provided Claire the following calendar:

TABLE 3 Care facility calendar
Admission

Release
11/3/2015
4/18/2016
6/10/2016
9/14/2016
11/1/2016
12/20/2016
2/13/2017
5/1/2017
6/1/2017
8/24/2017

Claire compared the calendar with the dates of the robberies.
TABLE 4 Robbery dates
Location

Dates
France
4/22/2016, 4/30/2016, 5/3/2016, 5/20/2016

England
10/2/2016, 10/14/2016, 10/29/2016

New York City
12/25/2016, 1/7/2017, 1/23/2017, 5/12/2017, 5/24/2017, 9/12/2017, 10/1/2017

Math Problem #3
Draw a timeline on your math sheet showing the dates that the suspect was in Ocean Recovery Center and the dates of the jewelry robberies.

Claire is convinced that she has the right suspect. To investigate any further, Claire is going to need warrants, or documents issued by a legal official authorizing the police to make an arrest, search premises, or carry out some other action relating to the administration of justice. A judge has to issue these warrants after being approached by the district attorney with enough evidence to show that they are necessary. This is where you come in.

Using a word processing document, write up Claire’s police report. List all the information that Claire has discovered, including the follow elements: