Chapter 1The Imposter in the Guest Room

My husband brought home a little girl, beaming as he told me she would complete our family. "She’s just the right age to be a twin to our son," he said. "Now you have the daughter you always wanted without the labor pains."

I assumed she was his illegitimate child, a secret he was trying to smuggle into our lives. So, I went behind his back and ran a DNA test.

I was wrong.

But when my husband found the results, the look on his face wasn't relief. It was terror.

* * *

My husband, David, and my mother-in-law, Brenda, came back from their "vacation" with a souvenir: a three-year-old girl named Mia.

Brenda didn't waste time. "Starting today, Mia is your daughter. Raise her alongside Leo like they’re twins. You’re always complaining about work being too busy to have another one, so problem solved."

She looked at me expectantly, as if I should be thanking her.

I looked at the little girl standing next to my four-year-old son, Leo. A wave of irritation hit me. This wasn't a puppy; this was a human being with memories.

Brenda had pitched this idea days ago. She claimed Mia was the granddaughter of David's distant aunt. The parents had died in a car wreck, the grandparents were gone, and no one else wanted her.

"I'm too old to raise a toddler," Brenda had argued. "You only have Leo. They can keep each other company."

I had refused. Raising a child isn't a hobby. I struggled enough with Leo, and he was my own flesh and blood.

David had tried the soft approach. "Sarah, honey, remember when you sponsored that high school student for three years? This is the same thing, just... closer to home. We have the money. It’s charity."

"Charity is writing a check," I snapped. "Parenting is a lifetime commitment. If she has no one, let's pay for her care elsewhere."

But now, here she was. Standing in my living room.

Mia looked up at me with big, fearful grape-black eyes, and my heart traitorously softened. She was an orphan. It wasn't her fault.

"It's just for the summer," Brenda said quickly. "If Leo doesn't like her, I'll take her back."

I knew that was a lie. Once she was in, she was staying.

And just like that, David pulled some strings, and Mia was legally added to our guardianship.

The adjustment period was surprisingly smooth. Leo loved having a playmate. Mia was docile, almost too well-behaved, always letting Leo have the first pick of toys.

But something felt off.

David treated Mia better than he treated Leo. He bought her endless dresses and toys, things he never bothered doing for our son. He took the kids out for expensive dinners weekly—something he claimed he was "too busy" for before Mia arrived.

Was he playing favorites? Or was he compensating for something?