Part One: The Routine
Every Saturday, the house split in two.
Casey would leave with Mom for the supermarket—loud, confident, pulling the cart while Mom drifted behind in her cardigan. Cade would stay with Dad, cleaning. Not that their father asked much of him. Dad preferred Casey's noise, her certainty. He'd ruffle her hair on the way out, say something like, "Keep your mother from spending everything, yeah?"
Cade would nod, start wiping counters, and say nothing.
Their father was a man of precision. Everything in the house had a place. Books arranged by height, dishes stacked in descending order. He moved through rooms like he was measuring them. When he looked at Casey, his eyes held approval. When he looked at Cade, there was something else—a calculation, as if he couldn't quite figure out what his younger son was for.
"You're too quiet," Dad would say to Cade. "People won't trust what they can't hear."
Cade would keep cleaning.
This went on for years. Saturday mornings were sacred, split like a fault line. Until one Saturday in March, the routine shattered.
Dad was found in the garage. A single stab wound—clean, precise, directly between the eyebrows. Whoever did it had known exactly where to aim.
The police found no signs of struggle. No forced entry. Dad had let his killer in.
After that, Mom stopped.
She stopped talking first. Then cooking. Then cleaning. The house that Dad had kept so perfectly arranged began to collect dust. Casey tried to fill the space—kept talking loud enough for both of them, kept moving, kept pretending the silence wasn't drowning them all.
Cade watched from the corners.
One Tuesday afternoon, Casey came home from school to find the kitchen empty. She climbed the stairs, and the air felt different. Heavy.
Mom was hanging from the ceiling fan in her bedroom, still wearing her cardigan.
Casey screamed. The sound came from somewhere ancient in her chest, something that had been waiting to break free. She couldn't remember calling 911. She couldn't remember anything after that except the feeling of falling, like the world had tilted and she was sliding off the edge.
When she woke up in the hospital, Cade was sitting in a chair beside her bed, reading a book. He looked up, and his face was still. Always still.
"You've been asleep for three days," he said quietly.
Casey tried to speak. Nothing came out.
"The police want to talk to you," Cade continued. "When you're ready."
She never did feel ready.
Part Two: The Blankness
They made a pact that night, whispering in Casey's hospital room after the doctors left.
"We'll find who did this," Casey said, her voice hoarse. "Dad. And then Mom."
Cade looked at her for a long moment. "Mom did herself."
"No," Casey said. "Something broke in her. Something we should have seen."
Cade closed his book. "Then we'll find who broke her."
Years passed.
Casey became a captain—all sharp edges and authority, climbing the ranks through sheer force of will. She talked loud in briefings, made decisions fast, never let anyone see the cracks. Cade became a lieutenant, always a step behind, always observing. They worked the same precinct. People said they were a good team, though no one could explain why they barely spoke.
The case of their father's murder went cold. Then colder. But neither of them ever stopped looking.
It was a Tuesday when everything started to blur.
Casey was driving home from the precinct, the radio playing something she wasn't listening to, when her phone rang. Vanessa's voice came through urgent, alive.
"Cap, I found it! A clue! Wait—"
Then a scream. Then nothing.
Casey pulled over on the shoulder, her hands shaking on the steering wheel. She called it in, her voice steady even though something in her chest was fracturing.
Vanessa's body was found near a barn three miles from Casey's house. Precise wounds. Multiple stab marks, but the kill shot—a deep puncture through the ribs—was exactly where it needed to be.
Professional.
That night, Casey sat in her apartment, staring at her hands. There was dirt under her fingernails. She didn't remember getting dirt. She didn't remember much after the call. Just fragments—driving, a barn, the smell of hay, something warm and red, and then she was home, standing in her shower with her clothes in a pile.
She couldn't remember undressing.
"It was Angelo," Cade said the next morning, sitting across from her in the precinct break room. "Old friend of mine. Same build as me, precise technique. He's done five kills in the past seven years—all women, all clean."
Casey stared at her coffee. "You think he killed Vanessa?"
"I think he killed Dad too," Cade said quietly. "I'm going to bring him in."
Casey nodded, but something in her mind was slipping, like trying to hold water in her palms.
Hours later, Cade returned with Angelo. They weren't in cuffs. They were laughing, walking down the station hallway like old friends reunited. Cade had a beer in his hand. Angelo had a cigarette tucked behind his ear.
"Just a friendly conversation," Cade said, noticing Casey watching from her office. "Old times."
That night, Cade called her. "I'm taking Angelo home. He's drunk. We'll sort this out tomorrow."
"Cade—"
"Tomorrow," he repeated, and hung up.
When Cade came back, he was still drunk, swaying slightly as he sat in Casey's office. She asked him the questions automatically: Did you get anything? Any new leads? Did he confess?
"No," Cade said. "No confession. But... I believe him, Casey. I believe he didn't do this."
Casey felt something hot and wrong crawl up her spine. She needed air. She needed to think. But when she stood, her legs felt unsteady, like they belonged to someone else.
"I'm going home," she said.
The next morning, Angelo was pulled from the river that ran behind his house. The stab wounds were a mess—angry, desperate, not precise at all. Both cheeks sliced open. A wound between his nose and mouth so deep it nearly severed his face.
This wasn't professional. This was rage.
This was someone breaking.
Casey found herself standing over the body, and she didn't remember driving to the scene. Didn't remember the walk to the dock. There was blood under her fingernails again. She stared at it, trying to remember, and the memories wouldn't come.
Just blankness.
Part Three: The Unraveling
Christmas break came quietly. The precinct was empty. Casey was meant to be resting, but she couldn't sleep. She kept having flashes—images that didn't connect to anything. A barn. Blonde hair. Blood on tile. The smell of cigarette smoke and beer.
On Christmas Eve, her friend Jolly came over. They sat on the couch with wine, and Jolly was talking about something, but Casey's mind was elsewhere, fragmented.
"You know," Jolly said carefully, "I've been thinking about Vanessa. And Angelo. And—Casey, what if it's not Angelo? What if it's someone close? Someone who could move freely through the cases?"
Casey's hand tightened on her wine glass. "Like who?"
"I don't know. But Cade was with Angelo that night. Cade knew Vanessa. Cade—"
"No," Casey said, but her voice was hollow.
"Just think about it," Jolly said.
The thought wedged itself into Casey's mind like a splinter.
It was midnight when Cade called. "I'm coming to pick you up. We should talk."
Casey stood up. "I need to use the bathroom," she told Jolly.
When she came back, Jolly was on the floor. Four deep slashes across her neck, the cuts overlapping in a frenzy. Blood pooled on the tile. Her eyes were still open, still confused, as if she couldn't understand how this had happened.
Casey stood in the doorway, and she didn't remember walking to the kitchen. Didn't remember picking up the knife. Didn't remember anything except the blankness where her memory should be.
The horn outside honked.
Cade's car was idling in the driveway. Casey got in, her hands still wet. She didn't know why they were wet. The drive was silent. When they parked, they sat in the darkness, the clock on the dashboard glowing 12:00 AM.
At exactly the same moment, they turned to each other.
"Are you the killer?" they asked, voices overlapping, exact same tone.
The answer hung between them like smoke.
Casey reached for the knife she didn't remember bringing. She didn't know she was crying until the tears blurred her vision. She stabbed Cade five times in the chest, each one precise, each one deliberate.
"Five," she whispered. Then she turned the knife inward, toward her own stomach. "Six."
Part Four: The Truth in Fragments
In the hospital, under heavy sedation and psychiatric observation, the memories came back in pieces.
The doctors called it Dissociative Identity Disorder. Trauma-induced fracturing after the death of both parents. Casey had developed an alternate identity—something darker, something that carried all the rage and pain that Casey's conscious mind couldn't hold.
Detective Morrison sat across from her in the psychiatric ward, his notebook heavy with terrible facts.
"Your other identity," he said carefully, "emerged approximately two weeks after your mother's suicide. We found evidence—journal entries, items hidden in your apartment, security footage from a building near the barn where Vanessa was killed. You were there, Captain. And you don't remember."
Casey stared at her hands. They looked like her hands, but they felt like they belonged to someone else.
"Vanessa found something," Morrison continued. "A connection between Angelo and your father's death. But your other identity didn't want that connection found. She killed Vanessa before the information could surface."
"And Angelo?" Casey's voice was paper-thin.
"Your other identity believed he was responsible for your father's death. She killed him out of revenge."
"Jolly?"
"Jolly suspected Cade. Your other identity believed Cade was about to be accused, which meant Casey would have to face the truth. She eliminated that threat."
Casey closed her eyes. In the darkness, she could feel something else there. Waiting. Breathing.
"The real killer," Morrison said quietly, "was your father's business partner. Angelo's mentor. He wanted revenge on your father for something in their past. He got out of prison six months ago. When he saw that someone was investigating his old crimes, he panicked."
"So Cade—"
"Cade was innocent. Of everything except getting drunk with an old friend."
The words didn't land. Casey felt like she was listening from underwater.
In the days that followed, the psychiatric team explained what had happened with clinical precision:
Casey's DID had manifested as a distinct personality—let's call her the Other. She had her own motivations, her own twisted logic. She believed she was protecting Casey. She killed the people Casey feared: the ones investigating Dad, the ones who might hurt Cade, the ones who might unravel the fragile world Casey had built.
But her methods were sloppy. Emotional. Not precise like their father's killer. Not controlled.
When Cade had asked if Casey was the killer, he'd already begun to suspect. When Casey responded truthfully—when both of them answered at the same time—they'd both known.
The stabbing wasn't an accident.
It was the only mercy Casey's conscious mind could offer her brother. And the final stab—the one Casey turned on herself—wasn't suicide.
It was the moment she tried to kill the thing inside her that had done all this.
It didn't work.
Epilogue: The Blankness Remains
Casey sits in the psychiatric hospital, medicated, monitored, waiting for trial. The doctors say integration is possible. That she might be able to merge the fractured pieces of herself back into one whole person.
She doesn't believe them.
Sometimes, she feels the Other moving beneath her skin. Testing. Waiting for the medication to wear thin.
The Saturday routine is broken forever.
And in the spaces where memory should be, there's only blankness—deep and dark and patient.
She counts to five, over and over.
One. Two. Three. Four. Five.
Trying to remember what happened in between.
Never finding the answer.