Lift the mat; take the DOOR KEY (J).
Use the DOOR KEY in the lock (K).
Enter the house.
Take the BOOMERANG (L).
Open the door; read the note and take the Spectral Fluid Jar (M) which will be added to your toolbar (N).
Use the Spectral Fluid Jar on the fluid (O).
Open the box; take the COMB (P) and note.
Use the 5C COIN on the dispenser; turn the handle and take the MARBLE 1/4 (Q).
Take the MARBLE 2/4 (R).
Open the panel; take the MARBLE 3/4 (S).
Take the MARBLE 4/4 (T).
Open the drawer and read the checkbook; place the 4 MARBLES in the box to trigger a puzzle (U).