My husband packed my suitcase the night before my flight.

That alone should have told me something was wrong.

In 11 years of marriage, my husband had never once touched my luggage. Not when we honeymooned in Cancun. Not when I flew to Portland to care for my mother after her hip surgery. Not even when we moved apartments 3 years ago, and I was carrying boxes alone while he watched football.

But that Thursday evening, there he was in our bedroom, folding my sweaters with a precision I had never seen from him, tucking my toiletry bag into the front pocket, zipping everything up with a smile that didn’t quite reach his eyes.

“You’re all set, sweetheart,” he said. “Early flight. You should get some rest.”

I remember thinking he seemed almost relieved.

My name is Clare. I’m 31 years old, a physical therapist, and until 8 months ago, I believed I had a good life.

A small but growing practice I built from scratch over five years. A house in Naperville, Illinois, that I had put the down payment on. A husband named Derek, who everyone said was charming, funny, the kind of man you were lucky to land.

I believed it, too.

For a long time, I believed all of it.

The trip to Seattle had been Derek’s idea. My younger sister, Jenna, had just had her first baby. A little girl named Rose, born 6 weeks early, still in the NICU, and Jenna was terrified and exhausted and needed family around her.

Derek had been the one to suggest I go.

“You should be there for her,” he said. “I’ll manage things here. Take a whole week.”

He even booked the flight.

I should have noticed the things I didn’t notice.

The way he triple-checked the time of my departure. The way he kept appearing in doorways that week, watching me with an expression I couldn’t name.

The night before I left, I caught him on his phone in the kitchen. And when I walked in, he ended the call immediately and set the phone face down on the counter.

“Who was that?” I asked.

“Work,” he said. “You know how Jason gets.”

Jason was his business partner.

I nodded and went back to the bedroom.

I was 31 years old, and I still didn’t see it.

The morning of my flight, my best friend, Mara, called while I was making coffee.

Mara and I had been friends since college, roommates for 2 years, the kind of close where you can go 3 weeks without talking and pick up exactly where you left off.

She was a nurse practitioner now, practical and sharp, with a habit of saying the exact thing you didn’t want to hear but needed to.

“You excited to meet baby Rose?” she asked.

“So excited. I’m just trying to wake up. Derek packed for me last night, which was…”

“Wait. Derek packed for you?”

“I know.”

“Derek, who left his own dress shirt in the dryer for 4 days because he couldn’t be bothered to hang it up?”

“The same.”

A pause.

“That’s weird, Clare.”

“It was sweet, I think.”

Another pause, longer this time.

“Call me when you land. Okay? Just call me.”

I told her I would.

I kissed Derek goodbye at the door. He held on a second longer than usual.

“Have a safe flight,” he said into my hair. “Everything is going to be fine.”

I thought he was reassuring me about the flight.

I’m afraid of turbulence. He knew that.

The Uber was waiting. I got in. I didn’t look back.

O’Hare was its usual chaos that Friday morning.

Lines at security, a gate change that sent half the terminal in the wrong direction, a coffee shop with a queue out the door.

I had 40 minutes before boarding, so I got in line.

When I finally reached the counter, I ordered my usual medium latte, oat milk, one sugar, but the barista was slammed, and a man behind me accidentally bumped my arm.

And somehow the cup ended up handed to me by a different person entirely.

Already lidded. Already prepared.

“Sorry, they made yours ahead,” the cashier said.

“It’s all right.”

I took it. I was running late.

I drank it while I walked to the gate.

It tasted slightly different, more bitter than usual. I figured it was the brand.

By the time I was in my seat on the plane, the world had started to tilt, slowly at first, the way it does when you haven’t slept enough.

My carry-on felt very heavy when I lifted it. My fingers had gone slightly numb.

I buckled my seat belt and told myself it was anxiety.

I always got a little anxious before flights.

The plane pushed back from the gate.

I closed my eyes and tried to focus.

My thoughts were slippery, like trying to hold water.

I reached for my phone to text Jenna that I’d boarded, and I couldn’t remember how to unlock it for a moment, staring at the screen as if I’d never seen one before.

That was when the fear arrived.

This wasn’t anxiety.

This wasn’t sleeplessness.

Something was wrong with me. Genuinely wrong, and I was 35,000 ft above the ground with no way to get off.

I pressed the call button.

The flight attendant who came was young, maybe 22, with a dark braid and an expression that shifted immediately from professional to alarmed when she saw my face.

“Ma’am, are you all right?”

“I don’t feel right,” I said.

My voice sounded far away.

“I think something is wrong. I think…”

I couldn’t finish the sentence. The words dissolved before I could find them.

She called for a colleague. They asked me questions. I tried to answer. Someone in the row ahead of me turned around.

I heard the words medical situation over the intercom.

I heard a man’s voice say, “I’m a physician. Let me through.”