Put the FISH SCALES on the statue (P).
Play the HOP.
You receive the MEDICAL EMBLEM (Q).
Talk to the doctor and give him MARY'S MEDICAL CHART.
Take the paper for the DNA samples (R).
Put the MEDICAL EMBLEM on the cupboard lock (S); open the cupboard and take the COMB and ACID (T).
Melt the back door chain with the ACID and walk forward to the Terrace (U).