The cloud of acrid smoke from the rug sends Mo into a coughing fit. An unseen smoke detector starts to scream as she stumbles forward and yanks the front door open. "In here!" she calls to the firemen walking up the driveway. As the first of them reaches her she holds out an arm: "I've checked the ground floor. There was a welcome mat, but I defused it: I think it's clear now, but let me check out the stairs."

"Understood, ma'am." Howe turns to face his men as Mo starts to check the staircase for surprises. "Wait while the lady checks the staircase. Scary, secure the garage. Len, backyard. Joe, show Dr. Angleton to the living room."

Ten minutes later, Mo joins Angleton downstairs. He's sitting in a floral print armchair with a book in his lap, looking for all the world like someone else's visiting grandfather. He closes it and looks at her mildly. "What have you found?" he asks.

"Nothing good." She peels her goggles off and perches on the edge of the sofa, then begins to return her instrument to its case. Wiping down the bloody finger-marks on the fretboard with a cloth: "Who lived here?"

"That's an interesting question. Would you be surprised if I told you these are designated premises?"

Mo's fingers stop moving. Her eyes grow wide. "No. Really?"

"It's very interesting: the Plumbers don't seem to be aware that they've signed off Safe House Bravo Delta Two as clean without inspecting it. It's assigned to one of our managers, by the way: SSO 6(A) Iris Carpenter. She's lived here for some years." Angleton's cheek twitches. "Husband and university-age daughter, a typical happy family. The family that prays together stays together: or preys, perhaps? Bob was reporting to her, and she was on BLOODY BARON. We've found our mole."

"But the back patio—"

Angleton closes his book. It is, of course, the Burton. "Yes," he says, cramming paragraphs of foreboding into the monosyllable.

"There's a bedroom upstairs," Mo says shakily. "The window frame is nailed shut, the door locks from outside, and there's a foam mattress on the floor with bloodstains on it. There's a monstrous thaum field, echoes of violent death—recently. And a dirty plate."

"Is that so?" Angleton carefully removes his spectacles, then extracts a cloth from his suit pocket. He begins to polish the lenses.

Boots thunder on the staircase. A moment later, a fireman bursts into the living room. "Sir!" He's holding something shiny in his right hand.

"What is it?" Angleton asks irritably, holding his glasses up to the light.

"Give that here." Mo reaches for it. "It's Bob's new phone." She stands up, holding it close: "Where did you find it?"