ffhound:
I guess you're right, the clues could both point to Yoshi or Dushka, but:
"As the orchestra began, Lord Vernon turned to Yoshi. "Care to dance, my dear?"
"With you?" Yoshi smiled. "Delighted."
Olivia and I watched them stroll out to the floor. They were a graceful, well-matched pair. "Any news?" asked Olivia.
"Our case," I replied, watching the dancers, "is solved."
I still believe this proves that it was Yoshi.
goodo