Photorealistic candid photo, shot on a phone, 4:5 vertical. Inside an…

Photorealistic candid photo, shot on a phone, 4:5 vertical. Inside an escape room themed as a Victorian study: dark green damask wallpaper, a heavy closed wooden door with a big brass padlock and a small old-fashioned brass keyhole, a round analog wall clock with a plain white face and black hands above the door showing exactly 8:01, warm amber lamplight, an oak table with a locked wooden chest and old books. In the foreground four young adult friends in casual hoodies (one yellow, one grey, one navy, one red) are bent over the table, deeply focused on a paper cipher and a magnifying glass, backs half turned to the door, not noticing anything. In the background a large reddish-orange common octopus is squeezing its soft body through the small keyhole of the closed door: most of it is already gone, only the last two tentacle tips are still on the inside, curling out of the keyhole. No text anywhere, no logos.