Imagine standing on the sidewalk in front of a block of apartments, but instead of seeing only closed doors and drawn curtains you can peer inside each room as if you had X-ray vision. In one apartment, a couple sits at a dinner table, but their body language suggests some awkwardness. Maybe it's a first date? The wall of a second apartment is covered with notes, diagrams, and red string connecting them: the occupant is investigating something, but what?
Finally you spot what you're here for: a dead body. A man lies on the floor of his apartment with a gun in his hand and a hole in his head, while in the laundry room someone else prepares to wash red stains off their shirt. That's a bit suspicious, isn't it?
