150,000 Syrians live in our country, having fled Assad's bloody regime. But are they safe in the Netherlands? Or are Assad's supporters also lurking here? We are gaining unique access to tens of thousands of previously undisclosed documents from Syrian intelligence agencies. The documents also provide new insights into the death of Syrian activist Mazen Al-Hamada. He fled Syria to Hillegom in 2014 to escape the torture practices of the Assad regime. Six years later, he unexpectedly returned to Syria under mysterious circumstances, where he was immediately arrested and killed.