Content warning: This article contains details of child sexual abuse

"I'd drive around most nights until three or four o'clock in the morning," he says.

"One time, I found her at a property. It was midnight, the middle of winter. I contacted the police and they said someone would be there in 10 minutes. I was still there at 4am waiting for them to turn up."

Marlon first contacted Sky News a year ago. His daughter Scarlett was repeatedly going missing, often just for an evening, but sometimes for up to two weeks.

She had shown him threatening text messages she had received - including a video of bullets being loaded into a handgun and fired out of a car window.

Among the intimidating messages was one that read: "Because you're ignoring me, I'm coming to shoot your dad."

Then a man wearing a black balaclava delivered a menacing letter to Marlon's house - his presence was captured on the CCTV installed above the front door.

Marlon, from Hyde in Greater Manchester, was convinced his daughter was being sexually exploited but claims no one would listen.

"Numerous times, police officers have told me they've got more important cases to deal with," he says.

Police shouted at father

At a meeting with the Greater Manchester Police missing persons team, Marlon says he was shouted at and told to stop reporting his daughter missing.

"At the time when that happened, she was 14 years old."

Scarlett, now 18, has waived her anonymity to talk about what was really happening. Her father's worst fears were right, she was being sexually exploited by older men.

She says she first reported being physically and sexually assaulted by a gang aged 14.

She felt the police didn't investigate properly. Her behaviour became more unstable and erratic, and she was an easy target for a groomer, in this instance a woman, who befriended her and led her into sexual exploitation by older men.

She would find herself waking up in hotel rooms, often with injuries, after getting drunk and being given drugs.

"I'd wake up and there would be loads of bruises on my legs and I didn't know where they'd come from, but they were big bruises," she says.

Images show her with bruises on her legs and face.

"I'd see things in the morning like condoms on the side, sex toys, big bottles of vodka, cocaine packets," she says.

She doesn't always recall exactly what happened but remembers her 'friend' going into the shower with one of the men, while another man stayed in the bedroom with her.

Scarlett knows that she was sexually exploited and has nightmares about it.

Sometimes she wakes screaming for her father. The recurring dream is of a shadowy man in her bedroom.

"The first few times dad reported me missing I feel like they (the police) took it seriously because I'd never been reported missing before," she says. "It was so out of character for me.

"And then, it was as though, after more phone calls the police officers would say 'oh I know you. I hear your name on the radio all the time'.

"Even if I've not met them, they'll say, 'oh we've heard of you'. I think they were just sick of my name coming up to be honest. So, the police just feel like I'm a problem to them."

Officers refused to arrest suspects

Even when she was picked up in cars with older men and her father reported her missing, Scarlett says officers lacked curiosity and if they'd bothered to search the car, they would have found drugs and a machete.

"The police wouldn't even arrest them. We'd be in a car park at 3am. It'd just be: 'What are you doing here?'

"They just took me home to my dad and said: 'She's been found in a car in a car park with older guys'. There were never any questions of 'why are you acting like this?'

"The police would say to me, 'give it five minutes 'til we've left, cos we know you're going to go again, so just wait 'til we've gone'."

Scarlett admits she would go back to her groomer.

She didn't trust the police. She felt the authorities were sick of her, and she didn't seem to understand she was being exploited because she thought it was "normal".

"In the back of my head I knew it wasn't right, but I just kind of ignored it because everyone else did," she says.

Once, after her father reported her missing, officers arrived at his home in the dead of night.

CCTV captured one of the men telling the other to give 'just a little tap' on the door.

Marlon thinks it's because they didn't want to get involved. He didn't hear them, and only knew they had visited from the images on his CCTV camera.

As a senior health worker who understands child safeguarding, Marlon knew the protocols to rescue his daughter from her groomer, which included trying to get a recovery order and what is called a Child Abduction Warning Notice (CAWN), which puts an alert out on a particular individual who might be a threat to a child.

But in a text exchange, a social worker told Marlon that social services could not apply for a recovery order because his daughter didn't have a care plan - neither could they apply for the warning notice because, they claimed, that was the responsibility of the police.

But the police texted back that it was in fact social services who would need to apply for a recovery order.

Marlon felt desperate and as if nobody was willing to help.

"While my daughter was missing from home for two weeks and being more traumatised by the experience of being groomed and sexually exploited, they just saw me as a problem, as a parent who gave them earache."

Abduction notice took three years

It would be another three years before the police imposed a CAWN on the person who was allegedly grooming Scarlett.

Meanwhile, she was struggling to cope and the person she took her anger and upset out on was the person most trying to help her.

"I used to get so angry with my dad," she says.

"I'd flip out at school because my emotions were all over the place. My way of dealing with it was to explode - it was like a volcano erupting."

As a result of these outbursts, Scarlett ended up in the care system from which she also went missing.

If there is one thing she would like to tell her younger self it is that everything her father did was to keep her safe.

"I realise why he did it now," she says, revealing a mind map she had drawn to convince care staff to let her move back in with her father.

"I used to get so angry with him sending all these emails and [arranging] all these meetings and I used to think 'You're an idiot. You're embarrassing yourself. What are you doing? Because the police aren't listening to you'."

Sharing story to help other victims

Scarlett is sharing her story now because she wants people in that situation to know they have a choice and they can get out.

"I didn't think anyone would be interested in what's happened to me," she says.

"Speaking out like this now, someone else might think 'I've been in the same situation as her' and there are things you can do, not just stay silent and suffer."

Greater Manchester Police's head of public protection, Detective Chief Superintendent Michaela Kerr, said safeguarding vulnerable young people is of "the highest importance" to the force.

"In recent years and in recognition of previous failures, the force has worked hard to ensure the consistent delivery of outstanding service, which fights crime; keeps people safe; and cares for victims. This work is ongoing," she said.

"In relation to this case, GMP's Professional Standards Branch and senior officers from the Tameside district have reviewed complaints.

"These have been resolved directly with the complainant and none of the outcomes have, so far, been appealed.

"The force and relevant partner agencies continue to work closely on this case and in relation to safeguarding generally."

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A Tameside Council spokesperson said they were legally unable to comment on Scarlett's case.

But they said: "Where any concerns or issues are raised we work closely with individuals, families and our partners to provide support and resolve, as appropriate.

"Where individuals aren't satisfied with the services received, we do have a statutory complaints procedure and individuals can ultimately take their complaint to the Local Government & Social Care Ombudsman."

Scarlett lost her childhood and much of her education.

Four years on from when it began, she is back with her father, who has paid for her to have therapy. They now have each other, but little faith in anyone else.