Chapter 1

The day I finally reached twelve weeks pregnant, I discovered that my husband had been a father behind my back for five years.

For 180 school days, he had driven that child to school every morning without missing a single one.

And after paying his biological son's tuition for two years, I was still the last person to learn the truth.

That morning, I had just returned from my obstetrician's office.

The doctor slid the ultrasound image toward me and pointed to the tiny shape on the screen.

Twelve weeks. A strong, steady heartbeat.

I stared at the image until my eyes burned before I finally dared to rest a hand over my stomach.

Callum and I had been married for seven years. I had gone through three rounds of ovulation induction and two embryo transfers. I had also lost two babies before I ever got the chance to see their faces.

After my last miscarriage, he held me and said it did not matter if we never had children. We would still have each other.

But I knew how badly he wanted to be a father.

So this time, I told no one.

I ordered a pair of tiny baby socks and wrote "Hello, Daddy" across the lid of a gift box. I planned to give him the surprise we had waited seven years for when he came home that night.

As I left the clinic, my car alerted me that one of the tires was losing pressure. Callum had sent our driver to the airport to pick up a client, so I asked the house manager to bring me the keys to the SUV Callum had left at home.

The moment I opened the door, a notice appeared on the dashboard.

"Child safety seat has completed its 180th trip. Annual inspection recommended."

I stared at it.

We had never installed a child safety seat in that car.

I opened the back door. The seat was gone, but four deep marks remained in the leather, and a scrap of blue cardstock was wedged between the cushions.

I bent down and pulled it free.

It was a folded handmade card with the crest of Saint Oak Elementary on the front. A child had written in crooked letters:

"To Daddy. Thank you for taking me to school every morning."

Inside was a drawing of a family of three.

The man in the gray suit was tall, with a black watch on his left wrist. I had given Callum that watch for our anniversary the year before.

The woman beside him had light brown hair and a red heart-shaped brooch pinned to her chest.

Callum's assistant, Tessa, wore that brooch to every formal event.

Between them stood a little boy with the name Noah written above his head.

I knew that name.

Noah was Tessa's five-year-old son.

She told everyone that his father had disappeared while she was pregnant. For the past two years, Callum had used the company's employee assistance program to persuade me to pay Noah's private school tuition.

At the time, I thought a child should not have to pay for his father's cruelty, so I covered Noah's fees.

The vehicle app held a full year of driving history.

At 7:40 every school morning, the SUV stopped first at Tessa's townhouse, then at Saint Oak Elementary.

One hundred and eighty trips. Not a single absence.

During that same year, Callum missed two of my follow-up appointments, one surgery, and breakfast on our sixth wedding anniversary.

His excuse was always the same.

Work was too busy.

At six that evening, I heard the front door open.

Callum walked in, removed his suit jacket, and bent to kiss my forehead.

"Sorry. The board meeting ran late."

As he spoke, his shirt cuff slipped into view.

Half of a small blue handprint stained the white fabric.

It was the exact same shade of paint as the card.

I hid the card behind my back.

"Were you at the office all day?"

"Of course."

He did not hesitate.

"Why would you ask me that?"

I looked at the man I had lived with for seven years and realized for the first time that he did not even blink when he lied.

"No reason."

I smiled.

He had no idea that the card calling him Daddy was in my hand.