At 9:17 on a rain-soaked Tuesday night, Aleandro Vitali ordered his dog out of the kitchen for the third time.

Maximus did not move.

The massive black Cane Corso stood beside the pantry door like a slab of carved shadow, muscular body perfectly still, nostrils flared, staring at the floor. Thirty feet away, the three kitchen employees became deeply interested in wiping counters that were already spotless. Nobody ignored Aleandro Vitali. Not employees. Not politicians. Not the men who carried guns beneath tailored jackets and called him sir while avoiding his eyes.

But Maximus remained exactly where he was, sniffing along the narrow seam beneath the pantry door. Then again. Always the same spot.

Aleandro lowered his whiskey glass. "Max."

Nothing.

That was when Hannah Collins noticed what everyone else had missed. She had been cleaning this mansion for eleven weeks, long enough to know that people did not casually correct Aleandro Vitali. But she watched the dog's head, the angle of his ears, the fixed attention of his gaze, and the words came out before her fear could catch them.

"He's not looking at the door."

Every sound in the kitchen seemed to disappear. The staff froze mid-wipe. Even the rain seemed to hold its breath against the windows.

Aleandro turned.

At thirty-nine, he possessed the kind of stillness more frightening than another man's anger. Tall, broad-shouldered, black-haired, dressed in a charcoal suit worth more than Hannah's car. He looked less like someone who needed bodyguards than like someone bodyguards needed protection from. His dark eyes settled on her.

"What did you say?"

Hannah swallowed. She looked at Maximus again. The dog had not glanced at her. He was still working the seam, patient, insistent, like a machine performing one task for which it had been built.

"He isn't watching the pantry," she said. "He keeps smelling the floor."

One of the cooks gave a nervous laugh. "He probably smells mice."

Hannah set down her cleaning cloth. She crouched. And Maximus moved aside for her.

That surprised everyone.

The dog tolerated staff. He obeyed handlers. He adored Aleandro. But for reasons Hannah didn't fully understand, Maximus had decided during her second week that she belonged here. Perhaps because she never approached him when he wanted solitude. Perhaps because she sometimes smelled of the peanut-butter crackers her eight-year-old daughter packed into her purse.

She placed her palm flat against the marble tile. Cold. She moved six inches. Cold. Another six inches. Warm.

Her expression changed. Aleandro saw it.

"What?"

"This tile." She pressed both hands against different sections of the floor. "This one is warmer than the rest."

Aleandro came closer. The nervous amusement vanished from the room like a flame deprived of air. Hannah looked up at him from the floor, and for a moment she was not a housekeeper and he was not a boss. They were just two people standing over something neither of them understood.

"Something underneath here is producing heat," she said.

For three seconds, Aleandro said nothing. Then he turned to his security chief.

Gabriel Moretti stepped forward. He had known Aleandro since they were teenagers. He managed forty-two security personnel. He controlled every camera on the property. He was reportedly one of only four living men trusted with the codes to Aleandro's private residence.

"Empty the pantry," Aleandro said.

Gabriel hesitated. Barely a second. But Hannah noticed. So did Maximus. And somewhere beneath their feet, hidden under twenty tons of stone and concrete, something electrical continued quietly humming.

They found the replaced flooring twenty-three minutes later. A shelving unit had been bolted over it. Once removed, the difference was obvious: four tiles sat slightly higher than the rest, sealed with newer adhesive. Aleandro watched two men lift the stone away.

Underneath was concrete.

Underneath the concrete was steel.

And beneath the steel—darkness. A narrow iron ladder disappeared into an old utility shaft, down into a blackness that made nothing of the kitchen's light.

Gabriel drew his pistol and started down. Aleandro's men followed.

"Someone's been entering the house," Gabriel said.

Hannah studied the opening. "No."

Every armed man in the kitchen looked at the housekeeper. Gabriel's expression hardened. "You know that how?"

She pointed at the ladder. "Look at the dust."

A fine gray layer coated the upper rungs. Undisturbed. No fingerprints. No shoe marks. No scraped rust. She looked at Aleandro. "If somebody climbed through recently, they'd leave something."

Aleandro crouched beside her. Their shoulders nearly touched. For the first time she noticed the faint cedar scent of his cologne beneath the colder smell of rain. "Then why open it?"

"I don't know." She leaned closer without touching anything. Then she saw it. "There."

Running down the side of the shaft, brand-new black electrical cable. Bright plastic ties fastened it to pipes that were decades old. Whoever had put it there had done so recently, carefully, and with complete knowledge of the house.

Aleandro's face went terrifyingly calm. "That wiring isn't old."

"No."

"What is it powering?"

Hannah looked into the darkness and felt something cold walk up her spine. "I think that's the question Maximus has been trying to ask you."

Behind them, the dog growled. Not at the tunnel.

At the room.

Hannah turned slowly. Twenty people stood in the kitchen. Cooks. Guards. Staff. Gabriel at the shaft lip, pistol still in his hand. One of them had installed that cable. Or one of them knew who had.