Ros Purcell

John Shaw asked to go to the toilet, with a plan in mind.

Garda Christy Riley was on his way back to the station after being in court in Galway City.

The man running in front of the two guards was John Shaw.

He had somehow escaped.

Shaw was quickly returned to his cell.

Now, a specialised detective unit arrived from Dublin.

With the chance that Mary Duffy could still be alive, there was an urgency to the job of the detectives who had just arrived.

One of those was Gerry O'Carroll.

He spoke on RT Radio in 2012.

11.30am, questioning began.

I can only deny it.

John Shaw was refusing to answer any questions at all, as one of the interviewing Gardaí recounts in his statement.

11.30am.

Shaw refuses to give his real name.

Says he can't help with the investigation.

There were no girl.

In the other room, Shaw's accomplice Evans admitted to being in Arklow and British Bay, but nowhere near any missing girl.

His timelines didn't add up.

Remember those boots that were found in the woods near where Elizabeth Plunkett went missing?

Gardaí asked Evans had he lost any of his belongings.