It is the first day of third grade and sassy Sydney and the new boy Sidney are not only neighbors, they are in the same class, so mix-ups are inevitable--but they soon find they share some common interests, including a love for Halloween.

"People in Somerville love to trade stories about days gone by. The town's young sleuths aren't always interested, but when they hear a local legend of buried treasure, they know it's too tasty to resist. Astrid, Rowan, Quinn, and Jace set off to solve the mystery. What they discover is sweeter than they cound have imagined"--

Ashley has a baby brother Sam who is cute because he is just beginning to talk, but is also cranky because his teeth are erupting; Ashlee has a twelve-year-old sister who can be fun, but also often ignores her younger sister--so the eight-year-old friends cannot decide which of them has a worse sibling situation.

A new kid has arrived in Somerville, and he has brought along a bit of mystery. Something about Jace and his mother just doesn't add up. Astrid, Rowan, and Quinn want to be welcoming, but they also have to get to the bottom of things. What they discover brings the group together and whets their appetite for adventure.

A history professor has discovered something valuable amid the dust at Somerville's tiny museum. It's a letter written by Abraham Lincoln to his boyhood friend. Some townspeople want to sell it, and soon they start squabbling about what to do with the money. Somerville's young sleuths decide to get involved before the letter can be sold or stolen.

Poppy and her best friend Millie are at the beach, but Poppy is not having much fun because she finds the water too cold, the wind too strong, and the sand too itchy.

Eight-year-olds Sydney (girl) and Sidney (boy) are neighbors, classmates, and usually friends, so working together on the school play should not be too difficult.

Poppy is not impressed with her best friend Millie's new playhouse, but she soon realizes that all it needs is a little imagination to make everything work out fine.