'It's like a nightmare I can't wake up from," Adrian Deacy says softly. "We were extremely close. I could just look at him and know exactly what he was thinking.
"Even by the way he would set his mouth or his eyes."
It is almost three years since Adrian lost his only son Joe in the most tragic, brutal and mysterious circumstances.
Today he has no answers. Gardaí have none either.
Joe Deacy (21), from St Albans, in the UK, was found unresponsive and face down in the driveway of a house in Swinford, Co Mayo, on the morning of August 12, 2017.
He was wearing only his boxer shorts and socks. A post mortem found he died from blunt force trauma to his head. He also suffered injuries to his eye-socket and hip.
Within days gardaí launched a murder investigation but three years on only questions remain. Joe Deacy is described by those who knew him as fun-loving and good-natured.
He loved Mayo, where he had many friends and family. At the time of his death, he was on a two-week holiday.
He stayed mainly with his father's cousin Michelle Murray and her family but he took time to visit all of his relatives and friends. On the night he died he was visiting a friend.
The last known photograph of Mr Deacy was taken in Paddy's pub in Kiltimagh, Co Mayo, late on Friday, August 11, 2017. CCTV footage taken from an ATM shows him withdrawing money at 11.22pm and then entering Paddy's pub with a group of friends. He is dressed in jeans, a jumper and runners. There is no sign of any injury.
It is believed Mr Deacy and a friend got a lift to the house where he was staying with a local man at around 1.30am.
Family members and friends of Mr Deacy have told gardaí they were in contact with the 21-year-old via social media app Snapchat up until 3.55am.
One family member who saw a photo sent by Joe described him as "looking like he had a few drinks, but not injured in any way".
At 6.46am a cyclist spotted him lying on the front driveway and rang the homeowner, whom he knew. The cyclist did not come into the property and continued on his journey.
Within minutes the homeowner rang 999 and called for the immediate assistance of an ambulance. He also rang the gardaí. CPR was performed on Mr Deacy for up to 25 minutes before paramedics arrived, but it was too late. He was brain dead by the time he arrived at Mayo University Hospital.
As relatives of Mr Deacy's arrived at the hospital they were ushered into a room and told there was no hope. Michelle Murray explains the horror of that morning will never leave her. "I was down as his next of kin because he was staying with me," she recalls. "We were brought into a room, about 9am, and allowed in one at a time to see him.
"I went in and he looked fine except his head was injured and he had a black eye and dried blood on his nose. I checked his hands and there were no marks.
"I thought he was going to be okay. It didn't sink in. I kept talking to him. A nurse and a doctor came in then and said there was no hope."
Mr Deacy was airlifted to Dublin's Beaumont Hospital where he was placed on a life support machine but he died the next day. From the minute he arrived in hospital concerns were raised about his injuries.
As soon as they saw him a member of the medical team treating Mr Deacy asked the paramedics if the gardaí had been contacted.
They took it upon themselves to contact gardaí in Castlebar who told them it wasn't their jurisdiction and to contact Claremorris. One medic told the family they believed Joe's injuries were similar to ones seen after a serious a car crash.
According to Mr Deacy's family, they were repeatedly told by the gardaí during the first 24 hours that they were satisfied he had fallen and had not been assaulted.
Speaking for the first time, the homeowner of the property where Mr Deacy was found has confirmed to the Irish Independent that he personally contacted the gardaí twice that morning.
He initially called 999 and when they failed to show up he rang his Garda station in Swinford at 7.23am and he stayed on the line for four minutes. The homeowner then left his house and went to the home of Gerry Moore, a cousin of Adrian Deacy, and arrived shortly before 8am.
He told Gerry to contact Joe's parents as he had fallen and it was serious. By the time he returned to his house gardaí had arrived. He and the other house occupants left and gardaí carried out a search.
No evidence suggestive of an assault was found inside or outside the house.
Speaking for the first time, the homeowner said he and his family "voluntarily left the house and they (gardaí) took over. We said, 'Find out whatever you can. Find out what happened'."
"We had no idea there was anything sinister," he said. "They [gardaí] thought from the next day then there was something suspicious about it.
"And it was declared a murder on Monday evening.
"We don't know what it was. Does anyone really know what happened?
"The lad was socialising in the town and came back to the house where he was staying.
"Did something happen to him in the town? Or did someone come back to our house afterwards? We have no idea.
"All we do know is we had nothing got to do with it. We worked on the lad for 20 minutes plus trying to keep him alive," he said.
The truth is all Joe Deacy's family want. Today Adrian Deacy appeals to anyone who knows anything about what happened to his son to please come forward. "Please, if anyone knows anything that can help us and Joe, please come forward. It can't be easy living with this."