WHILE I WAS OVERSEAS FOR WORK, MY HUSBAND TOOK HIS TWO KIDS ON A DISNEY CRUISE—AND LEFT MY 8-YEAR-OLD SON HOME ALONE FOR SIX DAYS.

“Also when I have.”

“That’s true.”

I took pictures of the counter, the list, the wrappers, the chair.

Mark’s handwritten instructions were beside the microwave.

Wi-Fi password.

Alarm code.

How long to heat the frozen meals.

Emergency numbers.

At the bottom, in his handwriting:

Don’t call your mom unless it’s an emergency. She needs to focus on work.

I read that twice.

Then I heard Noah coming back downstairs.

I folded the paper and put it on the counter.

“Hey, bud?”

“Yeah?”

“When you were at the store yesterday, why didn’t you call me?”

He shrugged.

“Mark said not to.”

“He said not to call me?”

“Unless it was an emergency.”

“And you didn’t think it was?”

Noah looked uncomfortable.

“I didn’t know.”

That was it.

Three words.

I didn’t know.

I had to turn away for a second and pretend I was checking something in the sink.

A child should not have to calculate whether he has earned access to his own mother.

That thought stayed with me.

I didn’t say it out loud.

I just said, “From now on, if you need me, you call me. You don’t decide whether it’s important enough. That’s my job.”

He nodded.

“Okay.”

Then I went next door.

Mrs. Palmer’s house was dark.

Her car wasn’t in the driveway.

I knocked anyway.

Nothing.

Rachel came up behind me.

“She’s in Cincinnati.”

I turned.

“What?”

“She told me last week she was going to see her daughter for spring break.”

I pulled out my phone.

There it was.

A group text from three days before I left for Germany.

Mrs. Palmer: Heading to Cincinnati Wednesday morning. Back next Tuesday. If anybody sees packages on my porch, please grab them.

Mark had reacted with a thumbs-up.

He knew.

I stood there staring at that stupid little blue thumb.

Later, I found a separate text he had sent her.

We’ll be away a few days. Keep an eye on the place when you’re back.

Not Noah.

The place.

That afternoon, while Rachel helped Noah pack enough clothes to stay with her another night, I sat at my kitchen table and started remembering things I hadn’t wanted to remember before.

Mark taking Tyler fishing.

Noah asking if he could go.

“Maybe when you’re older.”

Tyler had been eight on his first fishing trip.

Christmas morning.

Tyler got a new baseball glove.

Madison got concert tickets.

Noah got a desk lamp because Mark said he needed one for homework.

Useful.

Thoughtful.

Technically.

But not the same.

And the phrase Mark used constantly.

The kids want pizza.

The kids are upstairs.

The kids need rides Saturday.

Somehow, the kids always meant Tyler and Madison.

Noah was Noah.

I had noticed.

I just hadn’t wanted to make too much of it.

Blended families were complicated.

That was what I kept telling myself.

You have to give people time.

You have to let relationships develop naturally.

You can’t force affection.

All true.

But sitting in that kitchen, I began wondering whether all my patience had been paid for by the same person.

Noah.

Rachel sat across from me.

“What are you going to do?”

“I don’t know.”

“Yes, you do.”

“No. I know what I want to do. That’s different.”

“What do you want to do?”

“Change the locks. Put his clothes in the driveway. Maybe set one suitcase on fire.”

Rachel considered it.

“Visually satisfying.”

“I’m not doing it.”

“Good.”

“The suitcase thing feels legally weak.”

She laughed.

I did too.

Then I stopped.

“I need to know what I can actually do.”

Rachel nodded.

“Then call somebody.”

I looked upstairs.

Noah was on the floor of his room putting Legos into a plastic bin.

Quietly.

Carefully.

Like he was trying to make leaving easy.

That did it.

I took pictures of every message I could find.

The house.

The food list.

Mark’s instructions.

Mrs. Palmer’s text.

Then I called a family-law attorney Rachel knew through a friend.

Her assistant asked what the matter involved.

I said, “My husband left my eight-year-old son alone for six days while I was overseas.”

There was a short silence.

Then her voice changed.

“I can get you in tomorrow morning.”

“I need to ask her something before my husband comes home.”

“What’s that?”

“I need to know what I have to do before that man walks back into my son’s house.”

Susan Keller was not what I expected.

Maybe I expected somebody aggressive. Somebody who would hear what Mark had done, slam a legal pad onto the desk and announce that she was about to destroy his life.

Instead, Susan was probably sixty, wore reading glasses on a chain, and had a ceramic mug that said WORLD’S OKAYEST LAWYER.

She read my notes for about three minutes without saying anything.