Scary, scary stuff.
Dublin Fire Brigade are always providing important hints and tips to its followers on how to be safe, secure and cautious all throughout the year - but they've especially upped their game this festive season.
So when they saw a video that some of their English colleagues had made, showcasing the importance of closing doors at night, they had to share it.
Check it out below.
— Dublin Fire Brigade (@DubFireBrigade) December 27, 2016
Please share this video, and help them save some lives.