Perfect for fans of Indiana Jones and Percy Jackson, this high-octane new adventure series follows Ryan and Cleo as they investigate a 3,000-year-old murder mystery in their hunt for ancient treasure.

When Ryan Flint accompanies his journalist mother to an archaeological expedition in Egypt's Valley of the Kings, he isn't expecting life-threatening danger and a 3,000-year-old murder mystery - but that's exactly what he finds! Before he knows it, he has joined forces with Cleo McNeil, an archaeologist's daughter, to solve secret codes, discover an ancient treasure and outwit a strange cult intent on gaining possession of the relic.

Can Ryan and Cleo unravel the mystery and solve the Phoenix Code before it's too late?

Indiana Jones meets THE DA VINCI CODE in this exciting new series for readers of 9+.

"The Famous Five meets Artemis Fowl in THE MYSTERY OF THE WHISTLING CAVES, an up to the minute adventure with postmodern Blytonian references." - THE BOOKSELLER on ADVENTURE ISLAND: THE MYSTERY OF THE WHISTLING CAVES

"a great romp of a story, definitely a page turner, and would make fabulous holiday reading" - THE BOOKBAG on ADVENTURE ISLAND: THE MYSTERY OF THE WHISTLING CAVES