Crime Scene Searching: The Wheel Method

When investigating a crime scene, different systematic methods are employed to ensure thorough coverage and effective evidence collection. One such method is characterized by searching outwards from a central point, much like spokes extending from the hub of a wheel.

Understanding the Wheel Search Method

The method described as searching "from the center of a circle to its radii" is known as the Wheel Search Method. Here's how it works:

• Establish a Center: Investigators identify a central point within the search area. This could be a significant piece of evidence, the location where a victim was found, or any other key landmark.
• Divide into Spokes: The search area is then visualized as a series of concentric circles or, more commonly, as wedge-shaped areas radiating outwards from the center, like the spokes of a bicycle wheel.
• Systematic Search: Searchers start at the central point and move outwards along each "spoke" or radius, examining everything within that defined sector.
• Expand Outwards: The process continues, expanding the search outwards in each sector until the entire area is covered. This method is particularly useful for large, open areas.

Comparison with Other Methods

While the Wheel method focuses on radiating search paths, other common techniques differ:

• Spiral Search: This method involves moving in an inward or outward spiral path from a starting point. It can be performed inwards towards a central point or outwards from a central point, but the path is continuous and spiraling, not radiating spokes.
• Grid Search: In a grid search, the area is divided into a grid (like squares on graph paper), and each grid square is searched thoroughly. This is often done twice, with the second search conducted perpendicular to the first.
• Zone or Quadrant Search: The area is divided into smaller, manageable zones or quadrants. Each zone is then searched using another method (like grid or spiral). This is useful for complex areas like a house with multiple rooms.

The defining characteristic of the Wheel Method is the radiating search pattern from a central point, akin to spokes on a wheel.