Four complete RJ - Boy Detective mysteries come together in this fun chapter book collection.

This volume includes:

The Mysterious Crate Vampire Hunting Alien Goo! Mystery Poo!

From suspicious late-night crates and secret attic investigations to glowing green goo and neighborhood stakeouts, RJ is always ready with a plan - and a detective hat.

Each mystery is a short, standalone case filled with clever clues, playful twists, and satisfying solutions. Kids can read one story at a time or race through them all in one sitting.

Perfect for: Kids ages 7-10Grades 2-4 independent readersChildren who love gadgets, disguises, and goofy cluesReluctant readers who enjoy quick, confidence-building chaptersFamilies looking for fun, lighthearted mystery adventures

With four complete early chapter book mysteries in one convenient collection, this volume offers excellent value for parents and gift-givers.

RJ - Boy Detective books feature short chapters, clear language, and engaging cases set in a lively city apartment building - making this a dependable addition to any growing chapter book library.