When the old man who lives in Rourke Castle dies mysteriously, troubletwister twins Jack and Jaide Shield find themselves drawn into a search for

Soccer-playing twins Aiden and Ava try to lead their teams to championship seasons while also solving the mystery of their town's missing soccer

The mystery surrounding a dune buggy bought at the town dump deepens when the vehicle is stolen.

Life is confusing for seventh-grader Maggie, who must track down a missing person and find out who is behind a string of dog eggings at the local

By carefully observing the behavior of the new girl in her class, Becky discovers why Sara Beth hasn't been very friendly.

Twin detectives Katie and Mickey suspect that the disappearance of a marching band before a parade is linked to an attempted robbery at the local

In Venice, Italy, second graders Ethan and Ella hope to find a stolen gondola and a hidden mosaic before their parents realize they are missing.

"Forty years ago, Maureene Pinter painted a portrait of her twin sister, Doreene. In an eerie turn of events, Doreene hasn't aged, although her p

"Twins Ethan and Ella go on an adventure in Greece, where they learn about the mystery-solving Society of Apollo"--

In a Mumbai market, twin detectives Ethan and Ella investigate why a spice seller's spices have suddenly gone bad.

Separated from their parents in Beijing, China's Forbidden City, second-grade twins Ethan and Ella luckily find an ancient map that helps them fi