The mother of a student who went missing six months ago has been filmed walking the route her son was last seen taking before he disappeared.
Catherine OSullivan is videoed walking and discussing the evening her son Jack vanished after leaving a party.
Jack, 23, was last seen at 3.15am on Saturday, March 2 in the area of Brunel Lock Road and Brunel Way, in Bristol.
Searches by police and the family have failed to yield significant answers - and his disappearance remains a mystery.
Catherine has been filmed retracing the steps her son took on CCTV with the videos posted on the Find Jack campaign Facebook page.
Catherine retraced the steps her son took on CCTV with the videos posted on the Find Jack campaign Facebook page
Catherine OSullivan (left) is refusing to give up hope that her son Jack (right) can be found
Jack, 23, was last seen at 3.15am on Saturday, March 2 in the area of Brunel Lock Road/Brunel Way, in Bristol
Part one of the video is titled: Jack went to a party on Hotwell Rd Friday March 1st. He left the party at 2:53AM Saturday March 2. The following film picks up Jacks route from Macadam Way south of Cumberland basin.
In the video, Catherine said: So, what we do know is that hes come along past the front of the restaurant and then hes carried on and then cut through these pillars, and then hes walked possibly through this car park or possibly on the road.
Hes picked up again then on the Create Centre building on the corner over there, theres a camera.
That road was open, and this is where there was a stationary car after Jack had left this area. It just stopped in the middle of the road over there.
This was about 10 or 15 minutes after Jack was seen. By then, he could have easily been picked up over there and brought back around here.
Theres a camera, which is on the corner of that building (Create Centre) below the red brick. Thats what picked him up going around this corner.
What we can only assume is that he carried on through here. There are lots of cameras all over here, but not all of them are working.
Weve got images of Jack and hes passing these railings coming in this direction. This is the point now where we know that hes here somewhere, but we dont see him again for about 8 minutes.
We dont believe hes gone down there, because there is a camera at the end of there, and that doesnt pick up anything.
Cumberland Basin in Bristol where Jack went missing
Catherine trawled through CCTV, she spotted a person - who she is adamant is her son - walking over Plimsol Bridge at around 3.25am
Jacks phone sent its final GPS signal from an address in the nearby Granby Hill area at 6.44am
CCTV footage captured Jacks last known movements after he left the party in Bristol
I havent been able to physically view it myself. So much has been missed that unless I can see it with my own eyes.
When it is very dark, its really poorly lit here (by canal under motorway bridge). It is quite creepy.
As you go around this corner, its really not pleasant. I never felt this was a possibility (the canal) because youd have to get other this (the fence) to fall in. Its very dark, and when it is dark, its pitch black here.
When weve come down here at one in the morning, weve brought torches or used our phone torches.
Hes then entered the car park, but we cant be certain whether it was from this end.
He could have walked along here and then thought hang on, this is wrong and then gone back on himself, hence the time - obviously there was this lapse of time.
Jack was unsure about going to the party because he barely knew anyone there, but his mother had encouraged him to go and meet new people as his friends from home had moved away.
He took the bus from his house in Flax Bourton to Bristol city centre to have drinks with three of his university friends at a Wetherspoons, before all four, two boys and two girls, ventured to a house party hosted by a girl on his law conversion course.
The University of Exeter graduate, who had moved back to Bristol for the law course, stuck with his group at the party on Hotwell Road, but at one point tumbled down the stairs and hit his head.
Jack OSullivan (centre) is pictured graduating with his parents Catherine (front) and Alan (right) and brother Ben (left)
Jack OSullivan graduated from the University of Exeter and returned to Bristol for a law conversion
Jack’s last known movements have been retraced by his mum in a video posted to Facebook
When a random partygoer joked about him having too much to drink, Jack shoved him in a brief clash, but this did not go further.
Jack texted his mum at 1.52am to say he was safe and planned to get a taxi and left the party an hour later, without saying goodbye to his female friend who was having a cigarette outside.
Catherine said: There are so many potential issues....to have been to a party and didnt know where he was and was drunk and in the vicinity of water.
Hes now crossed over from Hotwells, over the wooden bridge by the pump house, and hes come down where the Lockside restaurant is.
If he hadnt chosen to be on the pavement side, he could have chosen to be on the Lockside of that. Hes evaded a lot of potential issues.
For me, Im thinking hes cleared this, hes cleared that, and all this time, he seems to be getting himself out of scrapes, rather than more into it. To put himself up on that bridge.
The end point of it, the police are thinking, is that he ended up in the water, but hed have done a hell of a job getting there.
Something like this (shrubbery area near the canal with no railings), to me, is really dangerous, and its pitch black normally. Theres no lighting here.
You could wander, thinking I wonder whats over there, and you could be down the side in an instant.
The next time hes picked up is entering this car park from this angle. Hes walked through here and passed these pillars.
There werent as many vehicles as there are now. These are the council vans.
From having to trawl through CCTV and carry out searches herself to being denied access to crucial phone and Apple AirTag data, Jacks mother has become increasingly frustrated by Avon and Somerset Polices investigation.
Catherine hired a private investigator and called upon missing persons specialists in Northern Ireland and Scotland to help scour the near five-mile route he could have walked home along the busy A370 - something detectives failed to do.
Catherine added: Theres a part of this thats a holding bay for council material. That is the security shop over there, and its their cameras that picked him up.
Theyve got him walking through here and walking straight across here and up onto the grass.
This used to be more of a flowerbed, and I can see him moving to the side to avoid it.
Then hes walked into the middle and we dont have any more footage because thats the angle that it cuts out.
In my mind, down there is a very unsavoury area (second poorly lit bridge area). Its pitch black.
Hes off camera for about eight or nine minutes, and we cant be exact about what happened during that time.
Catherine is still looking for answers into her sons disappearance and has posted the video in the hopes that someone will come froward with information
Pictured is Hotwell Road, where Jack was at a house party on the night he went missing
I try to put myself there all the time - what would Jack think, what would he have done, and what direction would he have taken? I never once considered he would be heading back into Hotwells.
I cant be 100% sure why I can say that, but my gut feeling when I stood over there, was that hes gone up and tried to join the road above.
For a long time, we had no evidence to suggest that, and it was just me and my feeling, but then we found him on camera.
From much later on CCTV, hes come up and followed this road all the way to the top. Hes gone up on this side because if he had been on the other side, the camera in the underground car park would have picked up his movements. At this distance, it hadnt picked anything up.
While Catherine was forced to trawl through CCTV herself, she spotted a person - who she is adamant is her son - walking over Plimsol Bridge at around 3.25am, heading back in the direction of Bristol city centre.
When officers were alerted to this, they later uncovered a second clip showing someone walking along the Bennett Way slip road at around 3.38am.
Jack attempted to call his female friend who was still at the party at 3.24am. When the friend called back 10 minutes later, Jack answered but only said hello before the call cut off.
His phone remained active on Find My Friends until 6.44am, lasting pinging on Granby Hill, and Catherine could hear the phone ringing through when she was calling him, indicating the device was still working.
He also took an Apple AirTag out with him, which was attached to his keys, but the family have been unable to access the data on the tracking device due to privacy laws.
Catherine continued: What we do know is, after the phone calls, his phone had various activity.
A data usage at 4:39, which is another hour after he was seen at this point.
At 5:40, his phone location was suggesting that he was two or three roads from here on Grampy Hill, at an address.
Were told that that was approximate, but I dont understand why an approximate address would have a house number, and thats a question we havent been able to have answered.