RJ - Boy Detective Books 1-4: Fun Short Story Mysteries for Children Ages 9-12 (The Mysterious Crate, Vampire Hunting, Alien Goo!, Mystery Poo!)

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 7–10
• Grades 2–4 independent readers
• Children who love gadgets, disguises, and goofy clues
• Reluctant readers who enjoy quick, confidence-building chapters
• Families 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.

PJ Ryan uses her 12+ years of experience as a full charge nanny to write the kinds of books she loved as a child. She is currently living in Thailand, working to expand the PJ Ryan collections of Rebekah, RJ and Mouse with many more titles planned for the future.