Unit 4,5,6

John Wayne Gacy was a serial killer and civic servant known for his crimes in the 1970s, where he murdered at least 33 young men and boys.

Herbert Mullin usually left his victims' bodies in remote wooded areas, which helped him avoid detection.

Tire and foot impressions can be lifted like latent prints if they are left in light dust.

Aileen Wuornos was a serial killer based in Florida who murdered several men while working as a sex worker in the late 1980s and early 1990s.

Paper samples may differ in their composition, which can be evident through examination of texture, fiber size, and color.

Latent prints are impressions left by the friction ridges of fingers or feet that are not visible to the naked eye.

Light dust can preserve tire and foot impressions, allowing forensic experts to lift and analyze them.

A serial killer is an individual who commits a series of two or more murders, often with a psychological motive.

Crime scene investigation is crucial for collecting evidence, identifying suspects, and solving crimes.

Common methods include examining texture, fiber size, color, and chemical composition.