Investigative journalist DENNIS ONSARIGO opens up on chilling prison encounters while filming ‘case files’ and how they transformed him




Wednesday, November 19, 2025 - Veteran Kenyan investigative journalist, Dennis Onsarigo, has lifted the veil on the haunting realities he encountered while working on Case Files, a groundbreaking series that took him deep inside Kenya’s prisons.

Onsarigo, celebrated for his fearless reporting, revealed how the experience reshaped his outlook on justice, crime, and humanity.

Speaking on the Iko Nini podcast, Dennis recalled his early visits with a mix of fear and respect.

“Prison is a controlled place; they reduce you to nothing. My fear was always: how do I get out safely?” he admitted.

That fear was justified given that he often interviewed inmates whose files contained chilling evidence, from decapitated bodies to reconstructed remains.

“When you interview someone whose files show they clearly killed someone and they admit it, it’s intense,” he said.

However, over time, Dennis learnt that building rapport was more effective than intimidation.

“You see raw evidence: decapitated bodies, reconstructed remains. The first years were tough, but eventually I built rapport,” he said.

“Some inmates became friends,” he added.

He was particularly struck by women’s prisons, praising Lang’ata Women’s Prison for its landscaping, cleanliness, and humane management.

Confessions alone were never enough; Dennis pored over volumes of police reports, witness statements, and postmortems, sometimes spending weeks on a single case.

He also sought out victims’ families, ensuring their voices were heard.

“We weren’t judges; our work was to present all sides and let the public decide,” he explained.

Some cases left lasting scars.

He recalled a woman whose 30-year sentence for killing her husband was increased to life on appeal, and another man, merely present at the scene, also condemned to life.

“That kind of injustice stays with you,” Onasrigo admitted.

The Kenyan DAILY POST

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