Ghosts could take material form, after all-if they had the power to form a new shape out of material from the Nevernever, and if they were familiar enough with the shape. The Nightmare had eaten a bunch of my magic. It had the power it needed. And it had the familiarity it needed.

Hell's bells, it was pretending to be me.

I hung up the phone and tore around the house frantically, collecting car keys and putting together an improvised exorcism kit from stuff in my kitchen: Salt, a wooden spoon, a table knife, a couple of storm candles and matches, and a coffee cup. I stuffed them all into an old Scooby-Doo lunch box, then, as an afterthought, reached into a bag of sand that I keep in the kitchen closet for Mister's litter box, and tossed a handful into a plastic bag. I added the scorched staff and blasting rod to the accumulating pile of junk in my arms. Then I ran for the door.

I hesitated, though. Then went to the phone and dialed Michael's number, fingers dancing over the rotary. It was also busy. I let out a shriek of purest frustration, slammed down the phone, and ran out the door to the Blue Beetle.

It was late. Traffic could have been worse. I got there in less than the twenty minutes I'd promised Murphy and parked the car in one of the visitor's parking spaces.

The district station Murphy worked in crouched down amongst taller buildings that surrounded it, solid and square and a bit battered, like a tough old sergeant amongst a forest of tall, young recruits. I ran up the stairs, taking my blasting rod with me, with my Scooby-Doo lunch box in my right hand.

The grizzled old sergeant behind the desk blinked at me as I came panting through the doorway. "Dresden?"

"Hi," I panted. "Which way did I go?"

He blinked. "What?"

"Did I come through here a minute ago?"

His thick, grey moustache twitched in nervous little motions. He took a look at his clipboard. "Yeah. You went up to see Lieutenant Murphy just a minute ago."

"Great," I said. "I need to see her again. Buzz me through?"

He peered at me, a little closer, then reached forward to buzz me through. "What's going on here, Mr. Dresden?"

"Believe me," I said, "As soon as I work that out, I'll be sure to tell you." I opened the door and headed through, up the stairs, and toward the S.I. offices on the fourth floor. I pounded through the doors and sprinted down the rows of desks toward Murphy's office. Stallings and Rudolph both started up from their chairs, blinking as I went past.

"What the hell?" Rudy blurted, his eyes widening.

"Where's Murphy?" I shouted.

"In her office," Stallings stammered, "with you."