I was sitting at my desk in the law firm where I rent office space. The night outside was chilly by the usual California definition, which is to say fifty degrees. I was the only one on the premises, ensconced in a halo of warm, sleep-inducing light while the other offices remained dark and quiet. I'd just put on a pot of coffee to counteract the narcolepsy that afflicts me at the approach to money matters. I laid my head on the desk, listening to the soothing gargle of the water as it filtered through the coffee maker. Even the smell of mocha java was not sufficient to stimulate my torpid senses. Five more minutes and I'd be out like a light, drooling on my blotter with my right cheek picking up inky messages in reverse.

I heard a tap at the side entrance and I lifted my head, tilting an ear in that direction like a dog on alert. It was nearly ten o'clock, and I wasn't expecting any visitors. I roused myself, left my desk, and moved out into the hallway. I cocked my head against the side door leading out into the hall. The tap was repeated, much louder. I said, "Yes?"

I heard a woman's muffled voice in response. "Is this Millhone Investigations?"

"We're closed."

"What?"

"Hang on." I put the chain on the door and opened it a crack, peering out at her.

She was on the far side of forty, her outfit of the urban cowgirl sort: boots, faded jeans, and a buckskin shirt. She wore enough heavy silver-and-turquoise jewelry to look like she would clank. She had dark hair nearly to her waist, worn loose, faintly frizzy and dyed the color of oxblood shoes. "Sorry to bother you, but the directory downstairs says there's a private investigator up here in this suite. Is he in, by any chance?"

"Ah. Well, more or less," I said, "but these aren't actual office hours. Is there any way you can come back tomorrow? I'll be happy to set up an appointment for you once I check my book."