The Al Mou’meneen Mosque is not far from the mortar factory, and it is here that the group from the farmhouse prayed and brought terror to the local neighbourhood. The mosque is modest and mostly without adornment. It is a bright spring day, and children are making their way home from school. But I have a sense of trepidation as I knock on the metal door. Is the imam who dedicated the book to the fighters still inside?

The caretaker answers and welcomes me inside. I take off my shoes and he sends a boy to find the imam. I sit waiting in the sunshine, drinking some sweet tea, listening to the children playing outside. The imam who signed the book is long gone, he fled with IS. So the caretaker calls to find the man who led prayers before IS took control of Mosul. The imam arrives, his name is Fares Fadel Ibrahim. He is younger than I expected, broad-shouldered and with a quiet confidence. I show him the pictures of the fighters and he recognises most of them. Quentin speaks to the imam:

He is nervous, though, and I soon discover why. “Please,” he asks, “Do not film me looking at the pictures.” Why is he afraid of these young men? The fighters, he says, moved their entire families into this neighbourhood. Most were Iraqi, but there were foreigners, from Syria, Morocco and elsewhere, he says. They lived among them for more than a year and fled in November 2016 when Iraqi security forces advanced closer to the area. Mullah Fares is, he explains, the temporary imam until the Department of Religious Affairs appoints someone permanently. That said, it is clear that this is his mosque. He has prayed here since he was a boy - since the mosque was built in 1980. And then he preached there alongside the permanent imam, until IS came. “What happened to the permanent imam,” I ask. “They murdered him,” he replies. And replaced him with their own preacher - the man who dedicated the book to the fighters. He called them "beloved darlings".

As we sit on the carpet together in the prayer hall, he explains the story of IS in Mosul and his neighbourhood. They corrupted the city, he says, and worse still, the world’s view of Islam. At first they treated people well, he explains. “They came with respect and appreciation and then their true intentions appeared.” For IS, the mosques are a means of control and of recruitment. Mullah Fares was given the option - join IS or stay at home and only return to the mosque he loved, to pray. So, he returned home.

They came in the name of faith, the residents of Mosul love faith, so anybody that comes to us as a person of faith we welcome it. But the reality was one thing and truth was another.” Fares Fadel Ibrahim

IS set about a purge. Other preachers were accused of being “delaying salafies,” and were imprisoned for a month, or longer. When released they promised never to lead prayer again. Others, like the Al Mou’meneen’s permanent imam, were killed. Looking at the pictures of the young men from the Nineveh Fire Support Group, Mullah Fares pauses for a moment, then says: “The power is with the person who holds the gun, even if he is very small and young. Like the young men from ISIS [IS] who killed some strong and old men of ours, like the imam here in the mosque, who was killed by children.”

It would soon be time for afternoon prayers and we have to finish the interview. Dozens of curious children are crowded around the mosque’s door, eager to get inside. But before Mullah Fares finishes, he has one more thing to say, about the young men who held this city.

They distorted the image of Islam, and this thinking will remain.” Fares Fadel Ibrahim