Keep looking but harder

Marisa kept looking through the old mansion. She searched closets and shelves. She looked behind couches and paintings.

Eventually she was rewarded while checking out the large fireplace downstairs. There was a fresh footprint inside it! She pushed and prodded around it. She picked up a dusty umbrella leaning against it and discovered that it was connected to the wall - it was a lever. She pulled it and the fireplace opened.

A wide tunnel led underground.