Harry and his friends in 3B are back in the 14th installment of Kline’s lively Horrible Harry series. In this one, Harry is having friendship problems with Sidney La Fleur, a classmate who bugs Harry every day. The newest episode happens when Harry wears a necklace to school and Sid tries to get the other kids to tease him about wearing jewelry like a girl. Turns out, the necklace is a magnifying glass and Harry promises to show his friends something he has discovered with it: a kingdom of mushrooms. The catch is that the friends have to swear to secrecy because the kingdom, filled with stinkhorn mushrooms, is located off school property and is off-limits to them during recess. After some soul-searching, the kids decide to break the rule. When their teacher asks where the mud has come from following recess, Harry sneaks in a little fib: mud gremlins must have traipsed in the offending dirt. Sneaking off a few yards from the playground is one thing; lying to Miss Mackle is another. The children face the dilemma of telling the truth and getting in trouble, and they do the right thing in the end. Kline’s gift is her ability to take the run-of-the-mill incidents in a young child’s life and make them taut and believable, just as nerve-wracking as they are to real children. Another winner for the just-ready-for-chapter-books crowd. (Fiction. 7-10)