In June 2014 when IS seized control of the Iraqi city of Mosul, Omar Mohammed, a young history scholar made the decision—"trust no one, document everything".

Under the rule of the Islamic State, several thousand Moslawis were killed, some joined the extremist group, and hundreds of thousands fled the city, but Omar stayed and began documenting life in the caliphate.

For the next two years Omar secretly reported the atrocities committed by IS in his anonymous blog, Mosul Eye.

He spent his days gathering information—speaking to people in the street, eavesdropping on conversation and witnessing public executions.

Then at night he would blog about what he had discovered.

As Mosul Eye became more well known, blog followers grew by the day.

Very quickly it was regarded as an important source for journalist covering the IS occupation of Mosul, and for those trapped within the city it was a trusted news source which offered a "beacon of hope".

Yet IS' determination to find the person responsible for this blog also grew.

So what was day-to-day life like living in the caliphate?

Guests:

• Omar Mohammed, founder of Mosul Eye
• Sophie McNeil, former ABC Middle East correspondent
• Chris Woods, director of Air Wars
• Tahany, a Moslawi economics student who lived under IS