Journalist Shona Sandison investigates sinister crimes forged in the shadows of Edinburgh's buried past. After beingcaught in a deadly blast that rips through the city's Old Town, Sandison unearths a dark trail that uncovers the city'scentury-old secret and the sinister plans of one of the world's most powerful men.

Encountering strange new allies, old friends and an ancient riddle, Shona's perilous path leads to a brutal confrontationwith the ruthless ambition of those whose wealth and power is never enough.