You're inside the Haworth Labs, on a quest to find a bottle cod liver oil that apparently Verloc has for Sally in exchange for the letter from Byng, after passing through multiple fires, explosions, chemical leaks and areas being flooded with electrified water, among other things, you make it into the White Bobby's office, one last step away from getting the bottle of cod liver oil

Meanwhile the white bobby, Alabaster, who'se still sitting behind his desk looks up from his paper work and at you, seemingly nonchalant even though the entire lab is falling apart

Alabaster: "Sorry sir, but Dr. Verloc is thinking very hard now, sir. No visitors"