hill's first novel was "voices under berlin: the tale of a monterey mary", published in 2008. it is a fictionalized story of the berlin spy tunnel (operation gold, covername: pbjointly). this was a comint, as opposed to a humint operation, which makes the novel different from most spy fiction. "voices under berlin" was an award winner at the hollywood book festival in 2008. since then it has garnered an additional five awards. most recently, it was included in the "indie 500 booklist" for 2011.