Dawn Bosco's on her way to summer camp. She can't wait for the fun to begin, but when her shell mirror and a favorite pin disappear, it's time for the Polka Dot Private Eye to investigate. Dawn's sure one of the kids from the Coolidge School—a Cool-Itch Kid took her things. But she's forgotten her detective kit at home, so how can she solve the case? An unexpected offer of help leads Dawn to the answer, and, best of all, to a surprising new friend at camp.

Oh, no! Arno the killer kindergarten kid is back. And Dawn Bosco's grandmother is his baby-sitter. How will Dawn and Jill ever have fun at the zoo with him along? Luckily, Dawn. the Polka Dot Private Eye, finds a mystery to solve. Someone has lost a notebook with gritty white poison all over it. But Arno has disappeared. If Dawn and Jill spend all their time looking for Arno, will they ever find out who owns the book?

Emily Arrow's blue ring is missing. What could have happened to it? Dawn Bosco knows the whole class thinks she stole it, just because she borrowed Emily's unicorn once. But that was weeks ago.With the detective kit her grandmother has given her—a polka-dot hat and fake glasses with furry eyebrows—Dawn rushes out to track down the crook. Can she find the thief—and clear her name?

Dawn Bosco freezes in horror as her cat Powder Puff jumps out of her arms and into a car. Before Dawn can stop it, the car drives away. Poor Powder Puff! This is a job for Dawn, the Polka Dot Private Eye—and she's ready. The only clues she has, she tells her friend Jason, are a jelly cookie, part of a license plate number, and a long pole. Can Dawn and Jason solve the mystery of the missing meow?

Dawn wonders whether mean Drake Evans is behind the strange happenings at the Polk Street School.

It's a hot summer day at the beach. The sand is crammed with bodies. Arno the killer kndergarten kid is building an apartment complex on his mother's feet. Somewhere a teenager is screaming. Who has stolen Gladys Mindy's almost-diamond necklace with the two almost-ruby hearts? She's offering a reward to whoever finds the thief. Dawn Bosco, the polka Dot Private Eye, is soon on the trail. But Arno keeps tripping her up. Will she solve her hottest case yet?

" Milk, Bread, Cheese, Food For Angel " reads the shopping list inside the shiny red purse Dawn Bosco finds in the school yard. Also inside is some sandy grit that looks like cracker crumbs and seventeen cents. This is Dawn's chance to solve another mystery! Three people say the purse is theirs, but whose is it really? With the help of Jason Bazyk and The Polka Dot Private Eye, which says " Ask Questions. You'll Find Things Out," Dawn discovers some surprising answers.

Dawn Bosco can't wait! Her camp counselor, Miss Perry, has just handed out clues for a treasure hunt. Dawn's itching to put on her Polka Dot Private Eye hat and find the hidden treasure. But her friend Lizzie Lee's hot on the trail. too! Lizzie's afraid of creepy, crawly things. Dawn's scared of horses with big teeth. These kinds of creatures must be faced before anyone can get to the treasure, but nothing will stop detectives Dawn and Lizzie!