Flesh and Blood by Franklin W. Dixon

article about Leonard Mock's trial."
    "He's right," Frank said with a nod of his head. "I read the same article this morning in Dad's file."
    "That still doesn't explain why you've taken such an interest in us the past two days," Joe said, still skeptical.
    "I told you - I admire you guys. Because of my dad's occupation, I've had to move around a lot, and I never really made friends very easily, never joined any clubs or went out for sports. I was real lucky to find Liz. When I saw that I might be able to help you two, I leapt at the chance." Don smiled. "I guess I should have looked before I leapt, huh?"
    Frank laughed. "I believe you," he said. He looked at his brother. "Joe?"
    Joe stared at Don and then glanced over at Frank. He fingered the safety switch on the rifle and was surprised to find that it was locked. He looked at Don and smiled. "Yeah, I guess I believe you, too. But that leaves one question. Who told Liz we thought you were Bobby Mock?"
    "I guess the real Bobby Mock set that one up," Don said, taking a deep breath. He held out his hand to Joe. "I'm sorry I pointed that rifle at you."
    Joe grabbed Don's hand in a firm grip. "I understand. You still want to help us find Bobby Mock?"
    "You mean it?" Don asked excitedly.
    "How do you feel about back alleys and breaking into city hall?" Joe said as they headed into the house.
    "What?" Don replied, a puzzled expression on his face.
    ***
    The alley behind city hall was littered with garbage thrown about by the previous day's tornado.
    Frank, Joe, Callie, Chet, and Don zigzagged their way through the mess to the rear of the building.
    Don and Joe had gone in Don's sports car while Frank, Callie, and Chet had used Chet's sedan. They parked the cars several blocks away and made their way moving from shadow to shadow in the moonless night.
    Joe had wanted Don to "borrow" his father's keys to city hall, but Frank had vetoed the idea on the grounds that, if caught, Mr. West could be implicated. Joe still liked his idea, especially after stubbing his toe several times on the garbage.
    "Here," Frank said, and he put his arms out to halt the group.
    "How can you see?" Chet said, frustrated.
    "He's got the eyes of a cat," Joe answered.
    Frank ignored both of them. He knelt down by the basement window and pushed against the glass. He didn't really expect it to be unlocked, but he was hoping it might have been broken by the storm.
    He wrapped his hand in his handkerchief, broke the glass, and then unlocked the window.
    He checked up and down the alley. He just hoped that Con was standing out in front of the police station to distract any other cops who might patrol the alley.
    He slid in across the window and jumped to the floor. Callie followed, then Joe and Don. Chet was a tighter fit, but he did make it through.
    Frank shut the window.
    "Now you can turn your penlight on," Frank said to Joe. "But keep the beam on the floor."
    "I've done this before," Joe reminded him pointedly.
    "The old records section is in the subbasement," Don said. "I can show you where I found the bogus file on Chet."
    Once downstairs, Joe tried a light switch. To their surprise, the overhead fluorescent lights flickered on.
    "This might be easier than we thought," Joe said.
    "Okay," Frank said as the others formed a semicircle in front of him. "Don, how did you find the file on Chet."
    "Everything's on computer. I just waited until the computers came back on-line and then searched for the case file number."
    "How did you do that?" Frank asked.
    "I pulled up the file on Robert Edward Mock," Don explained.
    "You didn't find the right file," Frank announced.
    "How do you know?" Don asked.
    Frank pulled the folded newspaper clippings from his shirt pocket. "Because of these," he announced. "Look." He laid the news photos on a desk. "In all four news photos, Mock is surrounded by a crowd of people."
    "That makes sense," Callie said. "Mock's trial was the biggest sensation to hit Bayport in years."
    Frank