Jade Romero, a young park volunteer in the Everglades, disappeared while camping. When Nancy agrees to search for her, she learns about a priceless Indian statue of a panther, hidden in the wilderness. A close escape on the road and a threatening note convince Nancy that the statue and Jade's disappearance are connected.

While on vacation in Fort Lauderdale, Nancy and her friends help a wealthy woman plagued with burglars who don't steal anything.

Kidnapped while trying to investigate the sinking of three freighters, Nancy finds herself on a hacienda in Colombia, where with the help of two friends, she tries to unravel the mysterious connection between the sunken ships and the strange events at the hacienda.

Nate the Great investigates two cases that may be connected, involving a missing valentine and a valentine that came from nowhere.

While exploring the caves around Dragon's Mouth Cavern, a series of unusual and somewhat frightening events convinces the Alden children that someone does not want them around.

Ten brief cases allow the reader to match wits with ten-year-old crime-buster Encyclopedia Brown as he tackles such problems as locating stolen jewels and retrieving a stuffed tiger.

Former best friends Emily, Aria, Hanna, and Spencer continue to live in fear as they struggle to keep even more secrets hidden and someone new begins stalking them via their cell phones.

When popular Lizzie Lovett goes missing, seventeen-year-old Hawthorne, a lonely misfit, finds herself becoming obsessed with solving the mystery.

When Max suspects that Mitzi's father has snuck vegetables into her muffin they hurry to the lab of her neighbors, Juan and Juanita, to investigate.

"When a hunting accident claims a boy's life, his best friends all come under suspicion"--