The Pet Detective Mysteries
ZOO QUEST
Book 5
MULTIPLE AWARD WINNING SERIES
Kassy and Percy are off on another adventure. This time to Washington Zoo on a mission to bring Kiki the koala bear back home. Along the way, they enter a treasure hunt at a national park.
Just days before her thirteenth birthday, Kassy’s only wish is to escape from the cramped tent she shares with her brother and his farting ferret, her not-quite stepsister and her squirmin’ vermin puppy . . . and a miniature goat with an appetite for underwear.
Kiki the koala needs to get to the National Zoo in Washington, and the gang is on the world’s most fun road trip to get her there. On the way, they camp in the Shenandoah National Forest, where they enter a geocaching contest full of riddles and puzzles to test even the brainiest middle graders.
Determined to win the contest, and a brand-new tent, Kassy faces off with the cheating Cheevers and risks losing Kiki for good. Can the gang outsmart the Cheevers, win the contest, and still get Kiki to her new home at the zoo?
Join Kassy’s fun-filled middle-grade adventure cracking riddles, detecting clues, and solving a whole zoo of animal trouble. Perfect for kids of all ages.
BURIED GOLD
Book 4
MULTIPLE AWARD WINNING SERIES
A missing cockapoo. A hidden key. And a treasure map lost for a century.
Twelve-year-old Kassy O’Roarke runs a pet detective agency out of the storage closet behind her best friend’s mom’s bakery. It’s not glamorous—but when cats and dogs start vanishing near the Lemon Tree Petting Zoo, business is booming.
While searching for a missing pet, Kassy, her pesky little brother, and Freddie the ferret stumble upon a hidden key… and a treasure map tied to real Tennessee history. Suddenly, the case gets a lot bigger.
With a mysterious new kid next door, the dog-catcher on the prowl, and clues leading all over town, Kassy must race to solve the riddles, rescue the missing animals, and uncover the truth behind the lost treasure—before everything slips through her fingers.
A fast-paced mystery packed with animals, puzzles, humor, and heart, this irresistible adventure is perfect for readers ages 7–12 who love clever clues, brave kids, and stories where curiosity always wins.
TREASURE HUNTER
Book 3
MULTIPLE AWARD WINNING CHILDREN’S LITERATURE
Pets are missing from Lemon Tree Heights. Can Kassy and her little brother Percy aka Crispy find them before the dog-catcher does?
With her family’s petting zoo at stake, Kassy has to stop the dognapping ring, and fast.
Hot on the trail of a missing cockapoo, Kassy discovers a mysterious key and a treasure map hidden inside a wall.
Just when she’s close to cracking the case, her brother Crispy and his faithful ferret Freddie go missing.
To find her brother and the missing pets, Kassy gathers all her courage and ventures into the local cemetery.
But can she unlock the clues and save the petting zoo in time?
Join Kassy’s fun-filled middle-grade adventure cracking riddles, detecting clues, and solving a whole zoo of animal trouble in the Pet Detective Mysteries. Filled with animals, adventure, riddles and brain-teasers for kids of all ages.
WHERE’S APOLLO?
Book 2
MULTIPLE AWARD WINNING SERIES
Sharpen critical thinking skills while exploring animals, friendship, and the power of generosity.
Apollo the cougar cub is the star of the Lemon Tree Petting Zoo. But he’s still missing and animal control is hot on his trail. If they catch him first, the zoo could lose its most treasured resident and get shut down forever.
Worse yet, Kassy’s little brother Percy has gone missing too, along with Freddie, his ferret.
Kassy has a reporter’s instincts and a knack for solving mysteries. She’s determined to track down Apollo, break the story, and save the zoo. But first, she’s got to find her little brother.
But this case won’t be easy.
There are too many clues. Time is running out. And the dog catcher is closing in.
Kassy must rely on sharp observation, clever puzzle-solving, and real detective smarts to follow Apollo’s trail and save her brother.
Is she up to the challenge?
Can she outsmart animal control and bring Apollo home safely?
CUB REPORTER
Book 1
WINNER GERTRUDE WARNER GRAND PRIZE FOR CHILDREN’S LITERATURE
Hone critical thinking skill while learning about animals, friendship, and the importance of generosity.
A cougar cub is on the loose… …and Kassy is the perfect kid to find it.
Can she track down the beloved petting zoo cat before getting grounded for life?
At 12-years old, Kassy has a nose for news. The big scoop is the daring escape of the much beloved cougar, Apollo from Lemon Tree petting zoo. Animal control is on the hunt.
She wants to find him first, get the story, and save the petting zoo.
It will take great detective skills.
Is she up for the case?
Can she outsmart the dog catcher?
When her pesky little brother and his ferret try help, the trouble begins. It will take some clever puzzle solving and a keen eye for clues to track down this adorable cat.
A mystery for kids 7-12 that the whole family will enjoy.
Kassy O’Roarke Pet Detective Activities Book
The Kassy O’Roarke Pet Detective Activities Book is overflowing with riddles, puzzles, brain-teasers, and of course a whole zoo full of fun animals.
Get out your markers and crayons… and then put on your thinking-cap and help Kassy figure out “whodunnit.”
“Where was Kassy when I was growing up? With jokes, riddles, puzzles, and mysteries for to solve, this series is sure to provide hours of entertainment. These books will hone reasoning skills while also being lots of fun. I highly recommend this collection for any budding sleuth!”
—Claire Katz, director of the Philosophy for Children Texas Program and the Philosophy Camp for Teens and Tweens
“Kassy O’Roarke is even more exciting than the Mysterious Benedict Society! The books make you feel like you’re really inside the adventure, like you’re really a part of it. The mysteries have many fun animals and twists. These are excellent books for young journalists and detectives! The activity book adds lots of fun coloring pages, riddles, and small mysteries for you to solve!”
—Mila Neely, Fan Review
Virtual Visits
Bring Kelly Oliver into your school, classroom, or library
If you’re a teacher or librarian and your class/school/library group has been reading the Pet Detective Mysteries, just request a visit at Kelly@KellyOliverBooks.com.
In your request, please include your name, contact information, the grade level and number of students, your preferred virtual technology, and three possible dates and times (in CST).
Virtual Visits are FEE FREE as a way of saying thank you for reading Kelly’s books. Sessions typically last twenty minutes and work best when the students come prepared with questions and then step up to the laptop/camera to ask them.







