From Edgar Award Winner Dori Hillestad Butler comes a new chapter book
mystery series, The Treasure Troop! Join Marly, Sai, and Isla, three
code-cracking kids on the hunt for an old neighbor's hidden treasure.
In the third book of this code-busting series, Marly, Sai, and Isla are
back on the hunt! Mr. Summerling has left them a brand-new set of clues
to follow, including tickets to the mysterious Summer Island. So with
tickets in hand, our trio sets off to their late neighbor's island. Can
they finally discover what lies at the end of this treasure hunt?