The Skeleton Key (Sigma Force, #6.5) - James Rollins I liked this short-story but I was expecting to know more about Seichan and her past or something like that. There's nothing new in this short-story but I have to say that it got my attention. I read the excerpt of Devil Colony and I am very curious about this book. It's supposed to be the turning point of Sigma series. Let's see about that.