A frazzled-looking gray-haired woman whistled and flagged Ben down by waving both arms.

“Got to go,” Ben said. “I’ll catch up with you later.”

As Sebastian approached the man who appeared to be in charge of the spaghetti line, he allowed himself one last look in Leah’s direction. He could only make out her bright sweater.

Disappointment snarled inside him, prowling for an outlet.

Math prodigy Leah Montgomery could not be his.

Your DNA results are in! Discover your heritage! popped up in Leah’s email inbox two weeks after submitting her second sample.

Immediately upon seeing that subject line, her blood pressure escalated in a rush.

This time the message found her while she was sitting on the bleachers at a track and field meet, cheering for her students. During a long break between events, she’d checked her phone.

She clicked the link in the email, then asked God for His peace and strength as she typed in her username and password.

The screen populated, and Leah stared at the same ethnicity pie chart YourHeritage had served her the first time. She brought up the screen showing her genetic matches. The same unfamiliar pictures and names appeared in a long line. Haskins, Brookside, Schloss.

Sorrow crept over her.

Her mother believed Leah to be the child she’d given birth to.

This second test proved, unequivocally, that she was not.

She wasn’t related by blood to her brother, her mom, or her dad. By blood, she was related to these people she did not know.

The starting gun signaled another race had begun. She raised her face and watched the runners dart off the blocks, pumping their arms and legs. Inside, her emotions were as chaotic as those churning, straining limbs.

Dylan.

For the past two weeks, her thoughts had been drawn to her DNA over and over again. It wasn’t as if she’d had no warning about the potential loss of her biological connection to her brother. Yet this confirmation sliced her with a grief so new and painful, it felt like a personal insult.

For many, many years prior to Dylan’s birth, she’d wanted a little sister of her own. Leah had been lonely, shy, uncoordinated, self-conscious—a solitary girl with a reservoir of love to give. She’d imagined that her little sister would look just like she did, love to graph parabolas like she did, appreciate tea parties with stuffed animals like she did.

Around the time she’d turned ten, she’d resigned herself to the truth. She was never going to get a sibling. Just like she was never going to get the Apple computer she asked for every Christmas.