The Buddy Files: The Case of the Fire Alarm by Dori Hillestad Butler

The Buddy Files: The Case of the Library Monster by Dori Hillestad Butler

The Buddy Files: The Case of the Lost Boy by Dori Hillestad Butler

The Buddy Files: The Case of the Missing Family by Dori Hillestad Butler

The Buddy Files: The Case of the Mixed-up Mutts by Dori Hillestad Butler

The Buddy Files: The Case of the School Ghost by Dori Hillestad Butler

King & Kayla and the Case of Found Fred by Dori Hillestad Butler

King & Kayla and the Case of the Lost Tooth by Dori Hillestad Butler

King & Kayla and the Case of the Missing Dog Treats by Dori Hillestad Butler

King & Kayla and the Case of the Mysterious Mouse by Dori Hillestad Butler

King & Kayla and the Case of the Secret Code by Dori Hillestad Butler

Lark Holds the Key by Natasha Deen

Lark Takes a Bow by Natasha Deen

Lark and the Dessert Disaster by Natasha Deen

Nancy Clancy, Super Sleuth by Jane O’Connor

Wallace and Grace Take the Case by Heather Alexander

Wallace and Grace and the Cupcake Caper by Heather Alexander

Wallace and Grace and the Lost Puppy by Heather Alexander

A to Z Mysteries series by Ron Roy (Begins with The Absent Author)

The Boxcar Children series by Gertrude Chandler Warner

Chapter Books (Examples)

A Horse Named Dragon

The Mystery of the Traveling Tomatoes

The Secret of the Mask

The Seattle Puzzle

The Ghost in the First Row

Graphic Novels (Examples)

Mountain Top Mystery

The Woodshed Mystery

Haunted Cabin Mystery

Mystery in the Sand

Capital Mysteries series by Ron Roy (Begins with Who Cloned the President?)

Calendar Mysteries series by Ron Roy (Begins with January Joker)

Encyclopedia Brown series by Donald J. Sobol

Examples:

Encyclopedia Brown Saves the Day

Encyclopedia Brown Shows the Way

Encyclopedia Brown and the Case of the Carnival Crime

Encyclopedia Brown Solves Them All

Encyclopedia Brown and the Case of the Soccer Scheme

Encyclopedia Brown Lends a Hand

Encyclopedia Brown Gets His Man

Lulu’s Mysterious Mission by Judith Viorst

Mysterious Benedict Society series by Trenton Lee Stewart

The Mysterious Benedict Society

The Perilous Journey

The Prisoner’s Dilemma

The Riddle of Ages

The Extraordinary Education of Nicholas Benedict

Nancy Drew and the Clew Crew series:

Examples:

#1, Sleepover Sleuths

#2, Scream for Ice Cream

#4, The Cinderella Ballet Mystery

#5, Case of the Sneaky Snowman

#8, Lights, Camera – Cats!

#9, The Halloween Hoax

#10, Ticket Trouble

#12, Valentine’s Day Secret

#13, Chick-Napped!

#14, The Zoo Crew

Sammy Keyes series by Wendelin Van Draanen

Sammy Keyes and the Hotel Thief

Sammy Keyes and the Power of Justice Jack

Sammy Keyes and the Kiss Goodbye

Sammy Keyes and the art of Deception

Sammy Keyes and the Skeleton Man

39 Clues series by various authors (Begins with The Maze of Bones by Rick Riordan)

All the Wrong Questions series by Lemony Snicket

Who Could That Be at This Hour?

When Did You See Her Last?

Shouldn’t You Be In School?

Why Is This Night Different from All Other Nights?

Camp Nowhere series by Lea Taddonio

Hair Today, Gone Tomorrow

Are You Fur Real?

Chasing Vermeer by Blue Balliet

Camp Nowhere series by Lea Taddonio

Hair Today, Gone Tomorrow

Are You Fur Real?

From the Mixed-up Files of Mrs. Basil E. Frankweiler by E. L. Konigsburg

Hardy Boys Mystery Stories series by Franklin W. Dixon

Examples:

The Tower Treasure

The House on the Cliff

The Mark on the Door

Nancy Drew Diaries series by Carolyn Keene

The Professor and the Puzzle

A Nancy Drew Christmas

The Haunting on Heliotrope Lane

The Stolen Show

Famous Mistakes

Real Kids, Real Places series by Carole Marsh

The Monumental Mystery on the National Mall

The Mystery at Disney World

The Mystery at Kill Devil Hills

The Mystery in Chocolate Town, Hershey, Pennsylvania

The Mystery in the Smoky Mountains

The Mystery of the Biltmore House

The Mystery on the Great Lakes

The White House Christmas Mystery

The Secret series by Pseudonymous Bosch

The Name of This Book is Secret

If You’re Reading This, It’s Too Late

This Book Is Not Good for You

This Isn’t What It Looks Like

You Have to Stop This

Skeleton Creek Saga by Patrick Carman

Skeleton Creek is Real

The Raven

The Crossbones

The Westing Game by Ellen Raskin