2008 Murder Mystery

Bloom CSI

Who Killed Mrs. Rehr?

Victim: Miss Marie Rehr

• High School World History Teacher and Volleyball Coach

The Crime Scene

• On Saturday, March 14th, the body of Miss Marie Rehr, World History teacher and volleyball coach at Bloom High School, was found. 

• Her body was dumped on the Southeast entrance steps, near McCann gym, very close to her classroom. 

• When her body was found, she was completely wet, and the coroner estimated that she had died within two hours of when the body was found.   

• The autopsy was immediately pursued and revealed large quantities of water in Miss Rehr’s lungs. 

• The cause of death was listed by the coroner was drowning. 

• The police concluded the Miss Rehr was killed and her body was transported to a different location.

• Knowing where the drowning took place will help the police to possibly narrow their list of suspects. 

• The problem is there are 10 bodies of water within a two-hour radius of where Miss Rehr’s corpse was found. 

• A chemical analysis of the water from the teacher’s lungs reflects abnormally high concentrations of phosphates. 

• It is hoped that analysis of water from the possible drowning sites will pinpoint exactly where the teacher was drowned and thus provide a clue regarding her murder.

Bloom CSI Units

1. The Chemistry Unit (CU)          

2. Trace Evidence Unit (TEU)      

3. Latent Prints Unit (LPU)      

4.  DNA Analysis Unit (DAU)      

5. Detective Unit

The Chemistry Unit

•  Water Analysis

• Looking a phosphate content in different bodies of water near each suspects home

Trace Evidence Unit

• Compare trace materials trace materials include human hair, animal hair, textile fibers and fabric, rope, feathers, wood, soil, glass, and building materials. 

• The physical contact between a suspect and a victim can result in the transfer of trace materials.

• The identification and comparison of these materials can often link a suspect to a crime scene or to physical contact with another individual.

Latent Prints Unit

• Conducts timely, high-quality scientific examinations in the area of friction ridge analysis

• This includes the development and comparison of latent fingerprints, palm prints, footprints, and dental impressions

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DNA Analysis Unit

• Utilize traditional (blood typing) serological techniques and biochemical testing in order to aid in the identification of stains such as blood, semen, and other body fluids.

• DNA analysis

Detectives

• Plainclothes investigators who gather facts and collect evidence for criminal cases.

• They conduct interviews, examine records, observe the activities of suspects, and participate in raids or arrests.

• Detectives and State and Federal agents and inspectors usually specialize in investigating one type of violation, such as homicide or fraud.

• They are assigned cases on a rotating basis and work on them until an arrest and conviction is made or until the case is dropped.

The Scene of the Crime

• All detectives and forensic scientists must visit the crime scene and……

1. Evaluate the Crime Scene

2. Document the Crime Scene

3. Reconstruct the Crime

Evaluate the Crime Scene

DO NOT TOUCH OR DISTURB ANYTHING

• Observation only

• Sketch the scene

The Sketch

• Include the critical features of the crime scene and the major, discernible items of physical evidence.

• Evidence sketches must show accurate measurements of the crime scene.

• Each sketch must have a legend. • The legend explains the symbols,

numbers, and letters used to identify objects on the sketch.

Document the Crime Scene

• The notes and reports

• These should include no opinions, no analysis, or no conclusions.

• Just the facts!!!!

• Document what you see, not what you think

• A general description of the crime scene

Crime Scene Reconstruction

• Use your sketch, your notes, your observations to recreate what happened

• Determine how a crime occurred or to verify or discredit allegations about what happened at the crime scene.

• Tell us a story of what you think happened just before the murder, the act of the murder, and after the murder