Black Rose by Nora Roberts
The second book in the In the Garden Trilogy is focused on Roz and her budding relationship with the handsome researcher/writer, Dr. Mitchell Carnegie. Mitch is helping Roz research the Harper family history with the hopes of discovery exactly who Amelia, who haunts the Harper homestead, is and why she cannot move on. This book sees a lot more ghostly action and delves a lot deeper into Roz's past and who she is.
I am really liking this trilogy. I think I loved this one even more than the first because of the genealogy and ghost activity aspects.