Each scroll is a new shot. A strip of film along the bottom counts the frames as you go; the missing one shows as a red gap and only fills in when the case is closed. On desktop the cursor is a magnifying glass: inside it, the same live 3D scene is redrawn in pencil with the detective's notes, so you see the drawing behind the picture. The contact form is the next case file, written in the detective's voice. On a phone, each scene is reframed for a tall screen.