Every day at the Athensville Zoo the peacocks are allowed to wander freely among the visitors, delighting and guiding kids and grownups alike, and kind, curious Plum is the peacock most proud of their responsibility. But Itch the ningbing--a type of very small marsupial--doesn't understand why those birdbrains should get so much freedom while he's all cooped up. So he plots and plots, sure that he will escape and become the zoo ambassador!

While working as an indentured servant for a Jamestown glassmaker in 1621, twelve-year-old Merry uncovers a case of sabotage.

A clue takes Amy and Dan Cahill to Egypt, where they investigate the origins of the rivalry between the Tomas and Ekaterina branches of their family and try to figure out if they can trust a message from their dead grandmother Grace.

"It was 1798 when the Morningstarr twins arrived in New York with a vision for a magnificent city: towering skyscrapers, dazzling machines, and winding train lines, all running on technology no one had ever seen before. Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher -- a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond...

"When twelve-year-old Logan Wilde wakes up to discover a baby griffin hiding under his bed, he suddenly finds himself thrown into a mystery involving his classmate Zoe Kahn and a magical menagerie right in the middle of his sleepy Wyoming town"--

"City girl Effie Starr Zook is not excited about spending the summer on her aunt and uncle's farm in Nowheresville, Pennsylvania, until she stumbles across a mystery that leads her smack into an old family feud"--

Roy, who is new to his small Florida community, becomes involved in another boy's attempt to save a colony of burrowing owls from a proposed construction site.

"Twelve-year-old Colophon Letterford has a serious mystery on her hands. Will she discover the link between her family's literary legacy and Shakespeare's tomb before it's too late?"--

While bumbling PI Percival Smidgely tries to find missing pig Mercy Watson, a trio of clever neighborhood sleuths follow a trail of hoof prints - and a delicious aroma - to recover their porcine wonder, in this uproariously funny, extra-special series finale.