One family in Bolton installed a CCTV to capture the culprit behind a series of burglaries in the neighbourhood. However, the family members were shocked to find that they had captured something beyond that - out of this world, in fact.
At first, they spotted what looked like a potential intruder with a torch outside. However, they soon found, to their amazement, that from 11.20 pm on August 15, there were some unknown causes on the camera. A bright, white light streaked across the sky. It was visible through some gap between two houses across the street.
Then suddenly, the light turned and shot in a different direction at high speed.
"We've had the camera a few months. We were actually looking for a thief. There has been a lot of robberies," said Diane, 48. "We didn't know what triggered the light the second time. It couldn't have been our cat, Alfie, as he was in the cattery while we were on holiday. But because we'd seen this intruder earlier, we kept watching the video."
"We were thinking that someone might appear, but there was nothing. Then we saw the light in the sky. I've never seen anything like it before. The light has a tail following it, so I thought it could be a meteor. But a meteor doesn't turn around in the sky and set off in the other direction. It was going at some speed."
When he saw the video from a hotel room in Ixia, Rhodes, Michael Smith, her partner, dropped just an idle joke - that it must be a 'flying saucer'.
The shot caught everyone offguard, including Diane as well as her three children - Olivia, 17, Alexandria, 14 and Honor, 13.
When she posted the video on Facebook, a few comments said that it could be linked to the Perseid meteor shower. This was an annual heavenly event that streaked across the sky just before the video.
"People said there had been a lot of meteors. But I looked at the video again and thought: 'No, meteors don't turn around 90 degrees in the sky', added Diane, of Bolton, Greater Manchester.
"We also thought it could be a drone. But we have a drone and they usually have a flashing light. It also seems to move too fast to be a drone."
What seemed to get closer to the truth was the speculation that it could be a flying saucer or a visiting alien.
"I have an open mind about that sort of thing," Diane said. There's possibly something out there. Maybe there are things we don't know about or that the Government keeps secret. I just want an explanation. There's probably a reasonable one. But if there isn't, maybe we're being watched!"