Do you believe in ghosts or spirits? Well, if not, you might be about to change your mind after watching one particularly sinister video.

Yep, the video in question appears to feature a mysterious figure lurking in the background. Or at the very least, an intruder of some sort – whether a phantom or a living, breathing person.

Over the weekend, Kayleigh Corby, 33, posted a seemingly innocent TikTok video in which she could be seen reacting to a very heartwarming birthday gesture posted by a fellow user on the platform.

The video sees the mom-of-two well up with emotion – but that's certainly not all that goes down in the clip.

Check out the eerie video below:

[[tiktokwidget||https://www.tiktok.com/@corby123aaa/video/6952615877858692357]]

Upon closer inspection, it appears that there is someone lurking around in the background of the video – despite her insistence that she was alone when filming the video.

Speaking to the Liverpool Echo, Corby, of Merseyside, England, explained that her two young children were asleep at the time of the video. The silhouette in the TikTok post appears to be that of a grown man.

And yet, Corby didn't immediately spot the bizarre addition when she first uploaded it to the app. In fact, she told the outlet that it was a friend who pointed it out to her.

The mom explains that she filmed the short reaction video in her kitchen at night before sending it to a friend. The friend then told Corby that there was a figure behind her and asked her who it was.

[[imagecaption|| Credit: Samuel Wordley / Alamy Stock Photo]]

Stunned by her pal's remark, the TikTok user decided to rewatch the video and realized he was right – there did appear to be someone else present that particular evening.

Needless to say, Corby was terrified at the prospect of an intruder in her home and worried for the safety of her two young children, aged six and seven. Feeling helpless, she asked her parents to come and stay with them amid her distress.

Corby told the publication that her father insisted she and her kids shouldn't be alone in the house following the unsettling discovery. Despite the finding, though, she has not yet reported the incident to the police.

Featured image credit: Cottonbro / Pexels

Mom left terrified after friends spot figure behind her in video she filmed while home alone