At 3:17 in the morning, my phone rang on the nightstand.

The man beside me didn’t move.

I almost ignored it, but the screen showed SACRAMENTO COUNTY, and something about seeing those words in the dark made me answer.

“Mrs. Rachel Miller?”

“Yes.”

“This is Deputy Aaron Cole with the Sacramento County Sheriff’s Office. I’m sorry to call you this way, but there’s been an accident on Interstate 80.”

I sat up.

Beside me, my husband Michael was still asleep, one arm under his pillow.

“Okay.”

There was a pause.

“The vehicle is registered to your husband, Michael Miller.”

I looked at Michael.

“That’s impossible.”

The deputy’s voice became careful.

“Mrs. Miller, I’m very sorry. The man we found did not survive.”

For several seconds, I couldn’t answer.

Then I reached over and put my hand against my husband’s shoulder.

Warm.

Solid.

Breathing.

Michael opened his eyes.

“Rachel?”

I stared at him while the deputy continued speaking into my ear.

They had Michael’s SUV.

Michael’s driver’s license.

His wallet.

His phone.

His wedding ring.

And a man who, according to the identification they had at that moment, was my husband.

Michael pushed himself upright.

“Who is it?”

I lowered the phone.

“The police.”

His face changed.

Not much.

Just enough.

“Why?”

I kept looking at him.

“They say you’re dead.”

He didn’t laugh.

He didn’t ask if I was joking.

He just sat there.

And that was the first thing that frightened me.

The Man Sitting Beside Me

Deputy Cole asked me to put the phone on speaker.

Michael rubbed his face and swung his legs over the side of the bed.

“Deputy, this is Michael Miller. I’m obviously alive.”

There was silence on the other end.

“Sir, can you confirm your date of birth?”

Michael did.

Address.

Middle name.

The last four digits of his driver’s license.

All correct.

Deputy Cole sounded increasingly confused.

“Is your vehicle currently at your residence?”

Michael looked toward the bedroom door.

“It should be in the garage.”

We went downstairs together.

The garage was empty.

I stopped barefoot on the cold concrete.

Michael’s black SUV was gone.

He stared at the empty space.

“What the hell?”

The deputy asked when Michael had last seen it.

Michael said around eight the previous evening.

That was true. I had seen it too.

Then Deputy Cole said something that made Michael sit down on the workbench.

“We found your wallet, your phone, your registration and what appears to be your wedding band with the victim.”

Michael looked at his left hand.

His wedding ring wasn’t there.

I noticed it at the same time.

“Where’s your ring?” I asked.

He looked down.

“I took it off.”

“When?”

“Yesterday. My finger was bothering me.”

Nine years of marriage.

I had seen Michael remove that ring for showers, home repairs and once when his hand swelled after a bee sting.

I had never heard him say his finger was “bothering” him.

Deputy Cole asked us not to go anywhere until officers arrived.

Michael started pacing.

I went back upstairs and put on jeans and a sweatshirt. When I returned, he was standing at the kitchen island drinking water.

The glass was in his left hand.

It shouldn’t have mattered.

But I noticed.

Michael was right-handed.

He had always been right-handed.

“Why are you holding that with your left hand?”

He looked at the glass, then at me.

“What?”

“Nothing.”

I walked away before he could answer.

It wasn’t the first time I’d noticed it.

I just hadn’t understood why it mattered before.

Two officers arrived shortly after four.

One stayed with Michael downstairs while Deputy Cole called me from the accident scene again. He asked about scars, tattoos, old injuries and dental work.

Then he asked something oddly specific.

“Has your husband ever broken a bone?”

I looked through the doorway at Michael.

“His right ankle.”

Michael turned toward me.

“Rachel.”

I ignored him.

“He broke it skiing when he was twenty-three. He needed surgery.”

“Hardware?”

“Two screws. Titanium, I think.”

Michael walked toward me.

“Why does that matter?”

Deputy Cole didn’t answer immediately.

Then he said:

“Mrs. Miller, I need to ask you one more question.”

“Okay.”

“Does your husband have a brother?”

Michael stopped.

I looked at him.

“No.”

Deputy Cole spoke again.

“A twin brother?”

Michael closed his eyes.

That was when I knew the police hadn’t made a simple mistake.

The Name I’d Never Heard

The officer standing in our kitchen turned toward Michael.

“Mr. Miller?”

Michael sat down.

For almost ten seconds, nobody spoke.

I waited.

Finally, Michael looked at the floor.

“His name is Matthew.”

I actually laughed once because the answer sounded ridiculous.

“Whose name is Matthew?”

Michael wouldn’t look at me.

“My brother.”

“You don’t have a brother.”

“Rachel—”

“Your parents had one child.”

“That’s what I told you.”

That sentence made the kitchen feel unfamiliar.

I pulled out the chair across from him.

“We’ve been married nine years.”

He nodded.

“I know.”

“You told me your mother nearly died having you and couldn’t have another child.”

“I know what I told you.”

The officer interrupted.

“Is Matthew your identical twin?”

Michael nodded.

I put both hands flat on the table.

“Where is he?”

Michael didn’t answer.

The officer did.

“That’s what we’re trying to determine.”

Michael finally told us the basic story.

He and Matthew had grown up outside Reno. Their parents divorced when they were teenagers. Matthew had gotten into trouble, left the family, and eventually became estranged from everyone.

Michael claimed they hadn’t had a real relationship in years.

“Then why does he have your car?” I asked.

“I don’t know.”

“Your wallet?”

“I don’t know.”

“Your phone?”

“Rachel, I said I don’t know.”

The officer glanced at him.

Michael lowered his voice.

“Sorry.”

Then I remembered the front door.

Eight months earlier, Michael had replaced our lock with a fingerprint system. He loved gadgets and insisted it would be safer than keys.

I opened the security app.

There were three registered users.

RACHEL.

MICHAEL.

And:

USER 3.

I tapped it.

Registered eight months earlier.

Forty-seven entries.

Most between midnight and five in the morning.

I stared at the screen until the numbers blurred.

“Michael.”

He didn’t answer.

“Who is User 3?”