5 Days a Stranger is the first game in horror-adventure series by Ben "Yahtzee" Croshaw. Player controls Trilby, a master cat burglar, who gets trapped inside seemingly abandoned manor. Soon he finds out there are other captives as well and together they have to uncover shady past of the manor to be able to leave.

Get in, get the loot, get out... that's how it usually goes for master cat burglar Trilby. But after he breaks into the supposedly vacated country manor erstwhile of the aristocratic DeFoe family, he quickly finds that things are not that simple. Together with a group of strangers, he finds himself imprisoned by some invisible intelligence. A force prepared to do anything to keep them there.