A Spy in the White House

2004

A Thief at the National Zoo

2007

A to Z Animal Mysteries #3

Cougar Clues

2024

A to Z Animal Mysteries #4

Dolphin Detectives

2024

A to Z Animal Mysteries #5

The Emerald Egg

2025

A to Z Mysteries

Books A,I,J,R,T [5 Book Set]

1995

A to Z Mysteries

The Canary Caper

1998

A to Z Mysteries Series #11, 13, 15

2002

A to Z Mysteries Super Edition #14

Leopard on the Loose

2022

April Adventure

2010

April Fools' Fiasco

2017

August Acrobat

2014

Bats in the Castle

2023

Colossal Fossil

2018

Crime in the Crypt

2021

December Dog

2014

Detective Camp

2006

February Friend

2009

Fireworks at the FBI

2006

Grand Canyon Grab

2019

January Joker

2009

July Jitters

2014

June Jam

2011

Kidnapped at the Capital

2002

March Mischief

2010

May Magic

2011

Mayflower Treasure Hunt

2007

Move Over, Wheelchairs Coming Through!

1985

Mystery at the Washington Monument

2007

New Year's Eve Thieves

2014

November Night

2014

October Ogre

2014

Operation Orca

2015

Secret Admirer

2015

September Sneakers

2014

Sleepy Hollow Sleepover

2010

Space Shuttle Scam

2020

The Absent Alpacas

2023

The Absent Author

1997

The Bald Bandit

1997

The Canary Caper

1998

The Castle Crime

2014

The Deadly Dungeon

1998

The Election-Day Disaster

2008

The Empty Envelope

1998

The Falcon's Feathers

1998

The Ghost at Camp David

2010

The Goose's Gold

1998

The Haunted Hotel

1999

The Invisible Island

1999