Emma smiled at Faith, her top lip forming a soft triangle. She gurgled again, this time with delight.

“Oh, God.” Faith uselessly pulled at the locked door. Her hands shook as she felt around the top edge of the jamb, trying to find the key. Dust rained down. The sharp point of a splinter dug into her finger. Faith looked in the window again. Emma clapped her hands together, soothed by the sight of her mother, despite the fact that Faith was as close to a full-on panic as she had ever been in her life. The shed was hot. It was too warm outside. Emma could overheat. She could become dehydrated. She could die.

Terrified, Faith got down on her hands and knees, thinking the key had fallen, possibly slid back under the door. She saw that the bottom of Emma’s car seat was bent where it had been wedged between the safe and the wall. Hidden behind the blankets. Blocked by the safe.

Protected by the safe.

Faith stopped. Her lungs tightened mid-breath. Her jaw tensed as if it had been wired shut. Slowly, she sat up. There were drops of blood on the concrete in front of her. Her eyes followed the trail going to the kitchen door. To the bloody handprint.

Emma was locked in the shed. Evelyn’s gun was missing. There was a blood trail to the house.

Faith stood, facing the unlatched kitchen door. There was no sound but her own labored breath.

Who had turned off the music?

Faith jogged back to her car. She took her Glock from under the driver’s seat. She checked the magazine and clipped the holster to her side. Her phone was still on the front seat. Faith grabbed it before popping open the trunk. She had been a detective with the Atlanta homicide squad before becoming a special agent with the state. Her fingers dialed the unlisted emergency line from memory. She didn’t give the dispatcher time to speak. She rattled off her old badge number, her unit, and her mother’s street address.

Faith paused before saying, “Code thirty.” The words nearly choked her. Code 30. She had never used the phrase in her life. It meant that an officer needed emergency assistance. It meant that a fellow cop was in serious danger, possibly dead. “My child is locked in the shed outside. There’s blood on the concrete and a bloody handprint on the kitchen door. I think my mother is inside the house. I heard music, but it was turned off. She’s retired Blue. I think she’s—” Faith’s throat tightened like a fist. “Help. Please. Send help.”

“Acknowledge code thirty,” the dispatcher answered, her tone sharp and tense. “Stay outside and wait for backup. Do not—repeat—do not go into the house.”

“Acknowledged.” Faith ended the call and tossed the phone into the back seat. She twisted her key into the lock that kept her shotgun bolted to the trunk of her car.

The GBI issued every agent at least two weapons. The Glock model 23 was a .40-caliber semiautomatic that held thirteen rounds in the magazine and one in the chamber. The Remington 870 held four rounds of double-ought buckshot in the tube. Faith’s shotgun carried six extra rounds in the side-saddle attached in front of the stock. Each round contained eight pellets. Each pellet was about the size of a .38-caliber bullet.

Every pull of the trigger on the Glock shot one bullet. Every pull on the Remington shot eight.

Agency policy dictated that all agents keep a round chambered in their Glocks, giving them fourteen rounds total. There was no conventional external safety on the weapon. Agents were authorized by law to use deadly force if they felt their lives or the lives of others were in danger. You only pulled back on the trigger when you meant to shoot, and you only shot when you meant to kill.

The shotgun was a different story with the same ending. The safety was to the rear of the trigger guard, a cross-bolt slide that took lithe muscle to move. You didn’t keep a round in the chamber. You wanted everybody around you to hear that round racking, setting up to blast. Faith had seen grown men drop to their knees at the sound.

She looked back at the house as she disengaged the safety. The curtain on the front window twitched. A shadow ran down the hallway.

Faith pumped the shotgun with one hand as she walked toward the carport. The action made a satisfying tha-thunk that echoed against the concrete. In a single fluid motion, the stock was against her shoulder, the barrel straight in front of her. She kicked open the door, holding the weapon steady as she yelled “Police!”

The word boomed through the house like a clash of thunder. It came from a deep, dark place in Faith’s gut that she ignored most of the time for fear of switching something on that could never be shut off.

“Come out with your hands in the air!”

No one came out. She heard a noise from somewhere in the back of the house. Her vision sharpened as she entered the kitchen. Blood on the counter. A bread knife. More blood on the floor. Drawers and cabinets gaping open. The phone on the wall hung like a twisted noose. Evelyn’s BlackBerry and cell phone were smashed to pieces on the floor. Faith kept the shotgun in front of her, finger resting just to the side of the trigger so that she didn’t make any mistakes.

She should’ve been thinking about her mother, or Emma, but there was only one phrase that kept going through her mind: people and doorways. When you cleared a house, these were the biggest threats to your safety. You had to know where the people were—whether they were good guys or not—and you had to know what was coming at you from every door.

Faith pivoted to the side, pointing the shotgun into the laundry room. She saw a man lying face-down on the floor. Black hair. Skin a yellow wax. His arms wrapped around his body like a child playing a spinning game. No gun on or near him. The back of his head was a bloody pulp. Brain matter speckled the washing machine. She could see the hole the bullet dug into the wall when it exited his skull.

Faith pivoted back to the kitchen. There was a pass-through to the dining room. She crouched and swung around.

Empty.

The layout of the house came to her like a diagram in her head. Family room on her left. Large, open foyer on the right. Hall straight ahead. Bathroom at the end. Two bedrooms on the right. One bedroom on the left—her mother’s room. Inside was a tiny bathroom, a door that led to the back patio. Evelyn’s bedroom door was the only one in the hall that was closed.

Faith started to go toward the closed door, but stopped.

People and doorways.

Her mind saw the words engraved in stone: Do not proceed toward your downward threat until you are sure everything behind you is clear.

Faith crouched as she turned left, entering the family room. She scanned along the walls, checked the sliding glass door that led into the backyard. The glass was shattered. A breeze rustled the curtains. The room had been ransacked. Someone was looking for something. Drawers were broken. Cushions gutted. From her vantage point, Faith could see behind the couch, that the wingback chair was clear of extra feet. She kept her head swiveling back and forth between the room and the hall until she was sure she could move on.

The first door was to her old bedroom. Someone had searched here, too. The drawers in Faith’s old bureau stuck out like tongues. The mattress was ripped open. Emma’s crib had been busted to pieces. Her blanket was ripped in two. The mobile that had hung above her head every month of her life had been ground into the carpet like a pile of dirt. Faith swallowed the burning rage this ignited inside of her. She forced herself to keep moving.

Quickly, she cleared the closets, under the bed. She did the same in Zeke’s room, which had been turned into her mother’s office. Papers were scattered on the floor. The desk drawers had been thrown against the wall. She glanced into the bathroom. The shower curtain was pulled back. The linen closet gaped open. Towels and sheets spilled onto the floor.