The latest Celebrity Big Brother 2017 housemate to be teased could cause trouble in the house.
"This mystery #CBB housemate might turn out to be trouble, then. Anyone know who it is?" the official Big Brother Twitter account wrote today.
In the clip, the mystery celeb says: "If someone says something and I'm not happy about it, I'll react.
"And that's probably what's got me in trouble."
— Big Brother UK (@bbuk) January 2, 2017
Fans have suggested the mystery celeb could well be most recent winner Stephen Bear, even though he's denied he'll be taking part in this month's series.
While we'll have to wait and see who that celeb is, some other stars have seemingly been confirmed for the line up.
The new series doesn't begin until tomorrow (Tuesday) night but the first celebrities have already arrived at the house.
This year is going to be an All Stars v New Stars special with a mix of former housemates returning and newbies taking part for the first time.
Those spotted at the house in North London today match some of the rumours we've been hearing over the past few weeks, with 'All Star' Nicola McLean and 'New Star' 90s DJ Brandon Block photographed at the studio.
Also seen at the Big Brother house is Spencer Pratt, one half of American couple Speidi.
As for who the other housemates will be, more new stars linked to the Celebrity Big Brother 2017 cast include footballer Jamie O'Hara, X Factor singer Sam Callahan, musician Ray J, reality TV regular Bianca Gascoigne, and singer Stacy Francis.
Meanwhile, past 'all star' housemates who could be returning include Austin Armacost, Coleen Nolan, James Jordan, Calum Best and Jasmine Waltz.
Celebrity Big Brother begins Tuesday night at 9PM On Channel 5.