"You went to him. You argued. He threatened to cut you off. You pushed, or he fell. Then you ran back to the east wing, lit a candle to see your own terror, and called Silas. Your lover. Your co-conspirator. He arrived not at nine, but at ten. After the murder. And the two of you spent an hour crafting the perfect, useless alibi."

"Elara," Mara said, softer now. "The east wing is twenty rooms. Maids' quarters, a ballroom, a billiards room. You're telling me that for three hours, neither of you left that wing? No calls? No bathroom break? No glass of water from the kitchen?"

Mara smiled. It was not a pleasant smile. "I know. That's the problem. An alibi is a story two people tell. But a mansion ? A mansion is a thousand silent witnesses. The floorboards that creak. The doors that latch from one side only. The wax from a candle you carried because you were afraid of the dark, Elara—wax you stepped in on your way back from the west wing."

Silas nodded, a small, precise motion. "From nine until… well, until the commotion. We were reviewing the revised trust documents. Mr. Blackwood was alive when I arrived. He was in his study, quite irate."