Horrid Henry's Nits
One of Francesca Simon's Horrid Henry books for young readers, illustrated by Tony Ross. Like the others in the series, it collects four short, comic stories about Henry, a gleefully badly behaved boy, and his prim younger brother, Perfect Peter. In the title story a nits outbreak sweeps through school and Henry sees a chance to cause maximum chaos. The writing is simple and fast, built for children moving into chapter books and for reading aloud. Short enough to finish in one sitting, it is more a run of everyday-life mischief than a single continuous plot.