Originally published Random House Australia in 2020.

"Where do you draw the line when your family and friends are in grave danger? Do you take action even though it means ignoring the rules? Back at Alexandria, with their friend Curtis Pepper visiting, Kensy and Max are enjoying the school break. Especially when Granny Cordelia surprises them with a trip to New York City! It's meant to be a family vacation, but the twins soon realize there's more to this vacation than meets the eye. The chase to capture Dash Chalmers is on, and when there's another dangerous criminal on the loose, the twins find themselves embroiled in a most unusual case. They'll need all their spy sensibilities, along with Curtis and his trusty spy backpack, to bring down the culprit."--Back cover