Yes, Deva is right about where it is, but I'll answer it here anyway <grin>. I'd actually like to do as little of that as possible. The two series feel a little different (Anna & Charles books are written in third person while Mercy books are first person with Mercy as the viewpoint character). And one of my biggest problems has always been that I add too many characters to my books. However, some characters (Bran) are too much a part of both worlds not to appear. With Charles and Samuel being brothers . . . Probably, however, Mercy, herself won't appear in the Charles and Anna books. Another problem with bringing main characters back and forth, is that it tends to confuse new readers -- or people who read only one series and not the other.