Zoom into the floor; take the CROWBAR (light blue) and read the note (G).
Walk down twice.
Zoom into the stairs and remove the planks with the CROWBAR (H); take the 1/3 GOLD TOOTH (I) and the MATCHES (J).
Go to the Boys' Dormitory.
Zoom into the dresser and take the 2/3 GOLD TOOTH (K); pour the OIL CAN into the lantern (L) and light the fuse with the MATCHES (M).
Zoom into the poster, remove the poster, and push the numbers 1, 5, and 7 (N); take the 2/2 RUBY (O) and the MASK (green).
Go to the Foyer.
Zoom into the frame; insert the 2 RUBIES into the niches (P).
Zoom into the frame (Q).