Investigative reporting is strongest when readers can understand the chain of evidence supporting its conclusions. That usually begins with primary records such as contracts, court documents, company filings, public databases, correspondence or on-the-record testimony.
A credible investigation separates allegation from verified fact and identifies which parts of a claim remain unresolved. Timelines are particularly useful because they allow reporters to compare statements with documented events and detect contradictions.
Corroboration matters as well. A single source may point to a story, but major conclusions should normally be supported by independent evidence whenever possible.
The purpose of investigative journalism is not to produce a dramatic accusation. It is to establish a defensible account of matters that are in the public interest.
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