From the day they brought their baby home, the black dog named Ink suddenly became a constant guardian of the bedroom. At first, Son and his wife thought it was a good sign: the dog was protecting the baby, guarding the door. But after just three nights, their peace of mind was shattered. On the fourth night, at exactly 2:13 a.m., Ink stiffened on all fours, his fur standing on end like needles, growling at the  crib beside the  bed. He didn’t bark or lunge, he just growled, a long, staccato sound, as if someone were muffling his voice from the shadows.

Son turned on the lamp and went to soothe his baby. The baby slept peacefully, her lips twitching as if she was sucking, not crying at all. But Ink’s eyes were fixed on the bed. He crouched down, stretched, stuck his nose into the dusty, dark space, and hissed. Son knelt, used his phone’s flashlight, and saw only a few boxes, spare diapers, and a thick, accumulated shadow like a bottomless pit.

On the fifth night, the same thing happened at 2:13. On the sixth, Son’s wife, Han, woke with a start when she heard a scratching sound, slow, deliberate, like nails dragging on wood. “Must be mice,” she said, her voice shaking. Son moved the crib closer to the closet and placed a trap in the corner. Still, Ink stared at the bed frame, letting out short grunts whenever the baby moved.

By the seventh night, Son decided not to sleep.

He sat on the edge of the bed with the lights off, leaving only the hallway lamp casting a golden sliver in the room. His phone was ready to record.

At 1:58 a.m., a gust swept through the half-closed window, bringing the damp smell of the garden.

At 2:10 a.m., the house felt hollow, drained.

At 2:13 a.m., Ink jumped up, not growling immediately, but looking at Son, pressing his nose against his hand, urging him on with his eyes. Then he crept forward, as if on the prowl, and pointed his snout under the bed. His growl erupted, deep and drawn out, preventing anything from coming out.

Son raised the light on his phone. In that brief flash, he saw movement. Not a mouse. A hand, pale greenish, smeared with dirt, coiled like a spider. The beam flickered as his hand trembled. Son stumbled backward, hitting the closet. Han sat up, asking panicked questions. The baby continued sleeping, milk moistening his lips.

Son grabbed his baby daughter, shielded her behind his back, and grabbed an old baseball bat. Ink lunged under the bed, his growls turning into furious barks, claws scraping. From the darkness came a frozen scraping sound, then silence. The lights flickered. Something retreated inside, long and fast, leaving a trail of black dust.

Han sobbed, urging him to call the police. Son’s trembling hands dialed. Within ten minutes, two officers arrived. One crouched, shining his flashlight as he moved boxes aside. Muc blocked the crib, baring his teeth. “Calm down,” the officer said evenly. “Let me check…” Under the bed was empty. Only churned dust, claw marks snaking across the floorboards.

The officer’s light stopped on a crack in the wall near the headboard: the wood had been cut enough for a hand to reach. He tapped; it sounded hollow. “There’s a cavity. Did this house have renovations?”

Son shook his head. At that moment, the baby moaned. Ink’s eyes glittered; he moved his head toward the crack in the wall and grunted. From the darkness, a harsh, human whisper filtered out: “Shhh… don’t wake him…”

No one in the house slept after that whisper.

The younger officer, Dung, called for reinforcements. While he waited, he tore out the wooden baseboard at the base of the wall. Strangely, the nails were new, shiny against the old, weather-stained wood. “Someone tampered with this a month or two ago,” he said. Son’s throat went dry. “I had bought the house from an elderly couple three months earlier. They had said they only repainted the living room and fixed the ceiling, not the bedroom.”

With a crowbar, Dung ripped out the wood. Behind it was a hollow cavity, black as the throat of a cave. The damp stench mingled with another smell: spoiled milk and talcum powder. Ink pulled Son back, growling. Han grabbed the baby, her heart racing.

Dung shone his light inside.

“Anyone there?” Silence. But when the beam crossed, everyone saw: small baby items (a pacifier, a plastic spoon, a crumpled washcloth) and dozens of tally marks scratched into the wood, crisscrossed like a net.

When the backup team arrived, they inserted a small camera and attached a bundle of dirty cloth. Inside was a thick, worn notebook with shaky, feminine handwriting:

“Day 1: Sleeps here. I hear his breath.”
“Day 7: The dog knows. Keeps watch, but doesn’t bite.”
“Day 19: I must be quiet. I just want to touch her cheek, hear her cry closer. Don’t wake anyone.”

The entries were short, frantic, as if scribbled in the dark.

“Who lived here before?” an officer asked. Son vaguely remembered: three months ago, during the handover, an elderly couple had been accompanied by a young woman. She kept her head down, her hair covering half her face. The older woman had said, “She’s worried, doesn’t talk much.” At the time, they hadn’t paid attention.

The camera revealed more: the cavity ran along the wall, forming a narrow, hidden tunnel. In one place, there was a makeshift nest: a thin blanket, a pillowcase, and empty milk cans. On the floor, a new scribble: “Day 27: 2:13. Breathe harder.”

2:13: The baby’s nighttime feeding time. Somehow, their daughter’s routine had been tracked, from within the walls.

“It’s not a ghost,” Dung said grimly. “It’s a person.” Investigating further, they found broken window latches and dirty footprints on the back ceiling. Someone had been coming and going until recently.

At dawn, Dung advised, “Lock the room tonight. Leave the dog inside with one of us. We’ll see if he comes back.”

That night, at 2:13, the fabric covering the crack in the wall shrank. A thin, dirt-stained hand emerged. A gaunt face followed: sunken eyes, matted hair, cracked lips. But what caught their attention most was its gaze fixed on the  crib, like thirst in human form.

She whispered again, “Shhh… don’t wake her up… I just want to watch…”

It was the young woman, Vy, the niece of the house’s previous owners. She had lost her baby late in her pregnancy, fallen into a deep depression, and somehow returned to this house. For almost a month, she had lived in the walls, clinging to the sound of a child’s breathing as her only tether to reality.

The officers gently coaxed her. Before leaving, Vy looked once more at the crib and whispered, “Shhh…”

Later, the hollow spaces were sealed and new floors were installed. Son and Han installed cameras, but the true guardian remained Ink. He no longer grunted at 2:13. He simply lay beside the crib, sometimes snorting softly as if to say, “I’m here.”

A month later, at the hospital for vaccinations, Han saw Vy outside, clean, hair tied neatly, holding a cloth doll, smiling slightly as he spoke to Officer Dung. Han didn’t come closer. She simply pressed her cheek against her baby, grateful for the sound of steady breathing and for the dog who had felt what no one else dared to face: sometimes the monsters under the  bed aren’t evil, but simply pain with nowhere else to go.