Nate the Great and the Sticky Case by Marjorie Weinman Sharmat
These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries!
A stegosaurus stamp belonging to Nate's friend Claude disappears, and the indomitable Nate the Great is called in on the case. At first, even Nate is stumped -- the stamp has just vanished without a trace! But with clues from the weather and his ever-faithful dog, Sludge, Nate is soon on his way to wrapping up his stickiest case yet.
From the Trade Paperback edition.