Although now retired, he is desperate for the case to be solved: “We need to know what happened to Lindsay. No matter how insignificant, if someone knows something, for heaven’s sake come forward.”

“It’s a little girl I’ve never met and yet I know really well,” he adds.

The detective now heading up the inquiry says police are still committed to finding the killer and getting justice for the Rimers.

Det Ch Insp James Entwistle says: “Loyalties change around people who know things, science moves on. There is always an opportunity and always a drive because this is a relentless pursuit for the truth.”

The wounds of not knowing remain unhealed for Lindsay’s family.

Kate describes her parents as “broken” with the whole family “exhausted by grief”.

They have created a memory box of their sister. They talk about a young teenager who had a love of fashion, was into Nirvana and the Prodigy and was keen to go to university.

But for self-preservation Kate and Juliet can’t focus too much on what Lindsay’s life may have been like.

“For our own wellbeing, we cannot go there.

“It’s too painful to think about what she would be doing and what she’s missed out on.”

The family’s only way of finding peace is to find the killer.

Kate says: “If you’ve experienced a death in the family you’re allowed to move on from it.

“You can forge a life where you encompass grief, but it doesn’t overwhelm it.

“But we’re stuck in this overwhelm all the time because we don’t have closure.

“We can only move on when we know who is responsible for killing our sister.”