Enter Gressenheller University

Talk to Professor Layton

Enter the sewer to the right of the Golden Spires Casino
(must be carrying the Sewer Key)

If you're not still carrying around the Sewer Key from the
Nuisance Arrested quest, the key will be in your closet

Follow the passage to the left

Consume the Cream Teas to restore 100% happiness

Examine the brown patch of wall at the end of the passage
(must be carrying the Queen's Blood)

Enter the opening

Walk up and examine the device


4,800 happiness if you're a Child at Heart
4,400 happiness if you have a Winning Smile
4,000 happiness for everyone else

This free video game walkthrough is for the Nintendo DS

Professor Layton's London Life Walkthrough

Professor Layton and the Last Specter

Professor Layton and the Specter's Call