What are the four search patterns listed?

• A. Grid/strip, Line, Spiral, Zone
• B. Grid, Circle, Line, Zone
• C. Strip, Line, Spiral, Ring
• D. Grid, Line, Spiral, Perimeter

Answer: (A)

The main idea here is recognizing the four search patterns that are classically taught for thoroughly canvassing a crime scene: grid/strip, line, spiral, and zone. Each pattern offers a systematic way to cover space and maximize the chances of locating all evidence.

Grid (sometimes called grid/strip) involves searching the area in intersecting paths, usually two sets of perpendicular lines, to ensure complete, overlapping coverage. This is ideal for larger or cluttered spaces where you want reduntant eyes crossing every area.

Line search uses investigators moving in parallel lines across the space, effectively sweeping the area in straight, uniform passes. It’s efficient for long, open areas and helps maintain consistent spacing between searchers.

Spiral search starts at a central point and expands outward (or inward), which is particularly useful when you suspect evidence radiates from a location or when access is limited to a single route.

Zone search divides the scene into defined sections, assigning each zone to a team member to search thoroughly. This works well for large or complex scenes where assigning zones keeps the search organized and manageable.

The other options mix patterns that are not typically listed as the standard four. Circle, ring, or perimeter aren’t part of the core four patterns used for comprehensive interior searching, and perimeter is more about boundary assessment than the systematic interior search these patterns describe.

So, the set Grid/strip, Line, Spiral, Zone best matches the common four search patterns used in crime scene searches.