A baffling crime puzzled the police until they called in the investigative minds of the AllStars! Along with Lisa from the CSIRO, the AllStars became real life Crime Scene Investigators as they:
tested blood samples,
compared finger prints,
took footprint plasters,
looked at DNA,
compared hair samples,
looked at oils found at the scene,
checked bullet casings,
and used chromatography to compare pens used.
“We had to look at the evidence that was left behind at the crime scene to work out who was behind a blackmailing plot, and the theft of $200 000 from a safe. There were four suspects who had been identified, but all protested that they were innocent. It was our job to look through the evidence and eliminate or prove a suspect guilty.”
Comparison of Hair: We had to look at samples under the microscope - the sample found at the scene and the suspects. Two of the suspects hair looked the same as the evidence hair. Celia
Comparison of Fabrics: We compared fabrics from the suspects, with a piece of fabric found on a chair at the crime scene. First we swirled the fabric in some water, then we dropped a few drops of indicator onto the piece of cloth. We left it for 2 minutes and then we compared the colours to see if it matched the evidence fabric. Sokeina
Soil Analysis: We had to put some soil samples in a dish and compare them to soil from the crime scene. We dropped a small amount of soil in the dish, then added indicator on top. The indicator turned a different colour according to the acidity of the soil. Each soil sample turned a different colour - but only one matched the soil from the crime scene! Nadine
Identikit Face: We had to memorize the description of a man seen at the crime scene and build a picture of the person’s face using a computer program. We had to make the picture look exactly like the picture of the man seen at the crime. Tyrone
Ballistics: We took the bullet found in the sofa at the crime scene and looked at it under the magnifying glass. We then had to try and spot identical markings on bullets from the suspects guns. We were able to find a match from one of the suspects guns. Marshall
Chromatography: this is when we drew a line on a small sample of paper and put it in water. The colours in the ink seperated and we had to match the ink from the pen used to write the blackmail letter. Gloria & Natalie
