The Cheating Heart by Carolyn Keene

jeans, plain light-colored T-shirts and sweatshirts.
    She searched the closets next. By checking the address tags on the suitcases on the upper shelves, Nancy could tell which closet was Carrie’s. Otherwise, there was virtually no difference. Neither girl had many clothes hanging up. A few pairs of shoes were lined up on the closet floor. Thinking of her friend Bess Marvin complaining about her crowded closet, Nancy had to smile.
    Then, just as she was about to close the door ofCarrie’s closet, something caught Nancy’s eye. She bent down to look closer.
    A tiny yellow scrap poked out from under one of Carrie’s white sneakers. Nancy picked up the shoe. A small square of yellow memo paper was stuck to the rubber sole by its adhesive edge.
    On it, in close, tiny handwriting, was a series of capital letters: B, D, C, A, A, C, B, D, C, D, A, D, B, A, C.
    It looked like the answers to a multiple-choice test!

Chapter

Seven
    N ANCY WISHED she had a copy of the answer key with her. How could she quickly find out whether these letters corresponded to the test answers without contacting the professor?
    Then she remembered that earlier that day Dean Jarvis had handed back to Ned the sheet of answers found in his textbook. She’d meant to ask him for it after they’d left the dean’s office. I’ll go get it right now, she decided, pocketing the yellow slip. She left Carrie’s room, flicking the door lock back on as she went out.
    Glancing at her watch, Nancy realized that it was almost three-thirty. The Omega Chi Epsilon party started at four! Feeling guilty, she hurried downstairs and jogged back to the Theta Pi house. The bathrooms were full of Theta Pi sisters getting dressed for their open house, butNancy managed to find an empty shower. She changed in record time, and left a note for Brook, arranging to meet her at six-thirty.
    Wearing a simple off-white dress with her hair skimmed back into a ponytail, Nancy walked briskly over to the Omega Chi Epsilon house. The afternoon sunlight made dappled patterns as it played through the trees lining Greek Row. The weather was no longer so oppressively hot and Nancy was excited that Ned and his friends would have a perfectly gorgeous evening for their party. Arriving breathlessly at the Omega Chi Epsilon house at five minutes to four, she saw Ned detach himself from the cluster of frat brothers standing around.
    â€œNancy, I was worried you wouldn’t make it,” he said anxiously. Nancy admired how his olive green jacket and yellow shirt set off his dark good looks. Glancing at his square clean-cut chin and warm brown eyes, she thought she was the luckiest girl at the party.
    Nancy smiled. “I wouldn’t let you down like that, Nickerson,” she said, slipping her arm through his. Looking around to make sure no one was listening, she murmured, “And I’ve got good news—I may have found our thief!”
    Ned’s eyes lit up with relief. “Really? Oh, Nan, that’s fantastic!”
    â€œBut I can’t be sure,” she cautioned him. “I need to look at that answer key we found.”
    Ned nodded and ran upstairs to his room. A minute later he came back down with the sheet of paper. Carrying it over to a corner, Nancy compared it to the yellow slip of paper from Carrie Yu’s room. She found the same sequence of letters, a third of the way down the answer key.
    â€œShe must have copied the answers onto two or three small pieces of paper to take into the auditorium with her,” Nancy thought aloud.
    â€œWho?” Ned asked.
    â€œCarrie Yu,” Nancy answered. “I found this in her room. It isn’t conclusive proof, but maybe I can use it to force a confession out of her.”
    â€œAren’t you going to call the dean?” Ned asked. “It might get Tavakolian off my back.”
    Nancy was reluctant. “Accusing someone of a crime is a serious thing,” she pointed