In the MERLIN acronym, what does the letter I stand for?

• A. Indices
• B. Investigations
• C. Inquiries
• D. Information

Answer: (A)

Indices are the signs or indicators found in the evidence that point to where to focus next. In MERLIN, I stands for Indices because you’re meant to identify concrete cues—the patterns, discrepancies, or connections across data points that help separate plausible leads from dead ends. By spotting and organizing these indices, you create a structured map of how facts relate, which helps test hypotheses and guide subsequent steps. For example, a repeated location, a consistent time pattern, or a similar modus operandi across incidents are indices that signal a possible link or common actor. This emphasis on identifiable cues distinguishes it from broad activities like investigations, or from just gathering information or asking questions.