TO THE families at Vanderbilt Children’s Hospital in Nashville, Tennessee, Jarratt Turner was a hero.

Turner, 36, worked as a window cleaner at the hospital and would often dress up as Spider-Man to entertain the sick kids inside.

In 2014, he even did an interview with local news station WZTV.

“It makes it even better if I can do my job and help some people out at the same time,” Turner said at the time. “These kids are pretty sick and anything we can do to make their day a little bit better, I’m all for it.”

But Turner had a dark secret which, thanks to a taskforce set up by Queensland Police, has now ended with him being jailed for 105 years.

Task Force Argos, established in 1997, is a world-leading paedophile hunting unit and it was the work of their undercover investigators that eventually led to the caught Turner.

Earlier this week, US District Court Judge Marvin Aspen sentenced Turner to 105 years’ jail in his Nashville courtroom.

“The sentence imposed by the court should ensure that this defendant will never have another opportunity to inflict his perverted sexual desires upon another innocent child,” US Attorney for the Middle District of Tennessee Don Cochran said, according to Metro.

“I frankly wish [the sentence] could be more. People like this are predators, and they build trust.

“This was a toddler, and an infant, and a family who came to trust him.”

Despite Turner using his job as a window cleaner to attempt to groom children, it is not believed he succeeded in finding any victims while working there.

Undercover investigators working for the Task Force Argos started looking into Turner in 2015, first making online contact with him in May of that year.

After chatting to the undercover cop for a while, Turner eventually emailed him two photos of a nude 2.5-year-old girl on a baby changing table.

In an email exchange Turner admitted sexually abusing the girl, that he had photos of a young boy and wrote, “I like boys and girls age 2-10.”

Turner also created an account on a photo sharing website with one album containing photos titled “my little boy” and the other “my little girl”. “I loooooove little ones,” he wrote.

The boy and girl were from two different families Turner befriended and babysat for.

He took sexually explicit images and videos of the toddler girl on 10 different occasions and of the infant boy six different times in his basement apartment in Nashville.

He had 25 images of the girl and 16 of the boy.

Queensland undercover investigators eventually passed the information to US Homeland Security Investigations which led them to a Nashville cafe Turner had been using to send the images.

He’d been regularly visiting the cafe to use its wireless internet and to send the photos.

The cafe manager and staff easily identified Turner who was arrested in June 2015.

“The manager further stated that (Turner) would order the same thing, coffee and two scoops of ice cream, most of the time,” the criminal complaint against Turner states.

Turner entered guilty pleas to 16 counts of production of child pornography and transportation of child pornography.

— With AAP