Hi, Cam! Thanks for asking, and apologies for not getting back to you until now. The idea for the series came from three places. I became obsessed with the Seven Wonders years ago during a trip to Greece. I looked across the harbor in Rhodes and imagined the massive Colossus straddling the harbor. It seemed utterly impossible for such a thing to have existed. I was hooked. I began digging into the Wonders just as a hobby, hoping to write about them. But I couldn’t really think of a story that could span all the different locations and times in which they were built. Later in that trip, I visited the island of Crete and learned that people there believed Crete was the site of Atlantis. Well, I’d always wanted to write about Atlantis too — but I figured that topic has been done by so many people, it was fruitless to even try. Third, I’ve been wanting to write a series of “desert island” adventures, where kids are trapped by mysterious forces, but that sort of book has also been done to death — and besides, I couldn’t figure out why those kids would be trapped there anyway! So I parked all three ideas in the back of my mind. And they began to mingle. So even though I couldn’t make each come to life on its own, TOGETHER they grew into an idea I loved! And the rest is history.