At two in the morning, a six-year-old girl pushed a vacuum twice her size across a mafia boss's private study, her baby sister asleep against her back in a knotted shawl. She wasn't scared of him.

The silence that followed Mia’s whispered confession was heavier than the damp Boston fog clinging to the windowpanes outside.

Roman did not move from the doorframe. In the world he occupied, a man learned early that sudden movements invited unpredictable reactions. He watched the small girl adjust the faded blue wool shawl crossing her chest, her tiny shoulders trembling under the combined weight of her baby sister and a commercial vacuum cleaner that weighed nearly forty pounds.

"Mia," Roman said, his voice low, gravelly, and stripped of the cold edge he normally used to command rooms full of hardened men.

The little girl jumped, dropping the wet cloth onto the dark leather blotter. She spun around, her canvas shoes slipping slightly on the polished hardwood. Her wide brown eyes locked onto him, filled with a sudden, overwhelming terror that made Roman’s jaw tighten. She immediately dropped to her knees, pulling her knees tight against her chest to shield the sleeping baby on her back.

"Mr. Duca," she gasped, her voice barely a thread. "Please. Don't tell Mama. She’s sick in bed. She has the fever, but she said she couldn't miss another day or you'd find someone else. I can do it. I can clean the whole room. I promise."

Roman walked into the room, his long, heavy strides silent against the Persian rug. He bypassed his desk, bypassing the mahogany chair where men worth millions had sat and begged for their lives, and knelt directly in front of the six-year-old girl.

He was six-foot-four, built like a fortress, wearing a bespoke suit that cost more than Grace made in three months. But right now, he folded his massive frame until he was at eye level with her.

"Your mother isn't going to lose her job, Mia," Roman said quietly, holding her frantic gaze. "And neither are you."

Mia swallowed hard, her little hands clutching the knot of the shawl. "You... you aren't mad?"

"I'm not mad," Roman said. He reached out, his thick, scarred fingers gently lifting the edge of the blue wool to inspect the baby’s face. Lily was barely eight months old, breathing softly against her sister's back, completely oblivious to the cold mansion around them. "Why didn't Grace tell my butler she was sick?"

"Because Mr. Harrison said last week that people who can't keep up don't belong in Beacon Hill," Mia whispered, lower this time, as if Harrison might hear her from his staff quarters downstairs. "Mama cried in the pantry."

Roman made a mental note to deal with Harrison before sunrise. The snobbish head housekeeper was going to find himself looking for employment in another state by morning.

"Harrison was wrong," Roman said simply. "Now put the cloth down."

Mia hesitated, looking at the half-polished desk. "But I didn't finish—"

"Put it down, Mia."

She obeyed, setting the damp rag on the tray. Roman stood up, reached over, and lifted the heavy iron handle of the vacuum cleaner, sliding it back into its corner alcove with one hand. When he turned back around, Mia was still standing near the desk, watching him with an uncanny, watchful stillness.

"Mr. Duca?" she asked softly.

"Yeah?"

She pointed a small, red-chapped finger toward the west wall of his study—a wall lined with three hundred years of leather-bound books, floor-to-ceiling mahogany shelving, and a massive oil painting of the Boston harbor painted in 1842.

"Why does the lady behind the wall scratch when the clock strikes three?" Mia asked.

Roman stopped. The air in the room suddenly felt twenty degrees colder.

"What did you say?" Roman asked, his voice dropping into the terrifying stillness that usually preceded a execution.

"The lady," Mia repeated, completely untroubled by his sudden shift in posture. "She scratches behind the books. Every night when I come up with Mama to turn off the lamps. She scratches three times, then she hums. Like... like a sad song. I told Mama, but Mama said it’s just the old pipes."

Mia stepped closer to the wall, tapping her tiny fingers against the carved frame of the book rack. "It’s not pipes, Mr. Duca. Pipes don't sigh."

Roman walked slowly over to the wall.

He had owned this Beacon Hill estate for twelve years. It was built in 1794 by a wealthy shipping merchant who double-crossed British privateers. Roman had spent three million dollars retrofitting the house with bulletproof glass, seismic sensors, and biometric locks. He knew every copper pipe, every electrical conduit, and every reinforced steel plate inside these walls.

Or so he had believed.

He reached out, resting his palm flat against the cold oak paneling right where Mia pointed. He felt nothing. Hear nothing.

"It happens at three?" Roman asked her.

Mia nodded, pointing up at the grandfather clock in the corner of the study. The brass pendulum swung with steady, hypnotic weight.

The hands read 2:14 AM.

"You're going upstairs to bed, Mia," Roman said softly, turning to her. "I'm going to carry Lily. Then I'm going to check on your mother."

"Are you going to check the wall?" she asked, her big eyes fixed on his.