An ex-spy struggles to dismantle a dangerous conspiracy in this explosive suspense thriller from the author of the Mongo Mysteries.   As a Naval intelligence officer stationed in the Middle East, Jade Aden was trusted with secrets that would leave most people shaking in their boots. But after the fallout from an incident during Desert Storm forced her into early retirement, Jade made a new, more pedestrian life for herself and her two children in the picturesque town of Cairn-on-the-Hudson, New York.   Employed as a river keeper, Jade monitors pollution created by weekend boaters and commercial tankers. But  when something strange surfaces in the river, Jade's dangerous past is dredged up once more. She knows the object strapped to a dead sea lion is a mine from a top-secret weapons system supposedly canceled years ago. Because it was highly classified, Jade is forced to feign ignorance, but her silence soon leads to death and destruction.   Determined to do the right thing, Jade must face off against forces willing to kill to protect their own despicable interests.