I was racing for a plane out of DC back home to San Francisco when my cell phone rang.
"Mr. Spade?" a female - a young female - voice asked.
"Yes. This is Sam Spade. What can I do for you?"
"It's about a pair of black, high heeled shoes. Your secretary told me you were in Washington."
"What about them?"
"I'm certain I lost them there and I need you to find them."
"These were special shoes?"
"The are my husband's favorites and if I don't wear them next week to a dinner party, he'll want to know why."
"And, er, he doesn't know you were in our Nation's Capital?"
"No. He doesn't. And he mustn't."