Why does Koko play the piano?

Does Koko find the clues about Daisy Mull's murder intentionally, or is it just a coincidence?

Compare and contrast Penelope Goodwinter and Melinda Goodwinter.

Why and how does Penelope Goodwinter act as an accomplice in Daisy Mull's murder?

Describe the lengths Penelope, Alex and Birch go to in an attempt to keep their secrets.

What role does Jim Qwilleran really play in solving the mystery surrounding Daisy Mull's disappearance?

Who is your favorite character, and why?