Greetings from somewhere

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 find their way.

With help from their cousin Harry, eight-year-old twins Ella and Ethan discover who is illegally taking coral from the reefs near their aunt and uncle's beach house on the shore of Australia's Coral Sea.

While in Machu Picchu, Peru, with their parents, eight-year-old twins Ethan and Ella cross a secret bridge and discover a mysterious stone sculpture.

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

Second graders Ethan and Ella are sad about moving away from their hometown to travel the world with their mom, a journalist, and dad, who will home school them, but before they go they have a mystery to solve.

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

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

"While visiting Alaska, Ethan and Ella follow some icy paw prints that lead to a brand-new mystery"--Provided by publisher.

"Twins Ethan and Ella are in the Maasai Mara in Kenya, and there's another mystery to solve. Where are all the lions? Ethan and Ella spot lots of cool animals, but the one they're most excited about, they can't seem to find"--Provided by publisher.