The Book of Lost Fragrances is the fourth book in the Reincarnationist series by M.J. Rose.After enjoying the third book in the Reincarnationist series, I was looking forward to continuing with book four. I have not yet read books one and two, but these are pretty stand alone reads.I don't read historical fiction very often, but this series has a nice mix of mystery and suspense.The reincarnation aspect of The Book of Lost Fragrances is tied to the memory of a scent. I loved this concept. It is likely this book will remain my favorite of the series.If you're a fan of historical fiction, The Book of Lost Fragrances has a lot of depth and a unique premise. I think a lot of mystery and thriller fans will enjoy it as well.