Finished: The Missing Sister (Riley) Book 7 of the Seven Sisters Series! At this point, we have met all six sisters who were adopted by Pa Salt, who were all given clues to their biological families after he died...plus the exact coordinates to where they were born. The individual stories of Maia, who found family in Rio, Ally, who found family in Norway, Star, who found family in England, CeCe, who found family in Australia, Tiggy, who found family in Spain, and Electra, who found family just a few blocks from where she lived in New York, were all fascinating and heartwarming and ended up positively for all the sisters. However, one thing that haunted their father for as long as they could remember was the missing seventh sister. They'd all been named for the Seven Sisters constellation and that included  the missing sister, Merope, even though she was never found. It was as if Pa Salt already knew who she was, but had lost her somehow. Now, as the one year anniversary of his death and burial in the Aegean Sea approaches, the sisters receive a big clue from their father's longtime attorney and friend, and they are determined to find the missing sister before they set sail on the anniversary to toss a wreath in the exact spot where Pa Salt was buried at sea. The clue takes them on a wild chase from New Zealand to Canada to London to Ireland, with different sisters picking up the trail depending on how quickly they could get to a location. They are basically chasing Merry McDougal, a 59 year old woman who has recently lost her husband, and whose son, Jack, and adopted daughter, Mary-Kate, hold down the fort in New Zealand. As the sisters realize that the near misses of meeting Merry aren't accidental, and that she doesn't want to be found, they begin to think that maybe she's afraid of losing her adopted daughter, and so doesn't want to be found. Of course, we go back in time to both the 1920's and the 1950's in Ireland, when the country was in the middle of a war for their independence. The times for the Irish people are very, very rough, but we do meet some very strong women who end up being related to Merry. It's another great story! I loved having a book where all the sisters were together and also having their own personal things going on as life moved forward for everyone. At the end of the book, we DO discover who the missing sister is...and we're also given a huge clue in one last letter that Pa Salt has written to that sister. Then the book ends!! None of the questions about Pa Salt's history and how and WHY he picked each of the girls is answered. In his letter he says..."It's all explained in the included journal." And, as it turns out, that is what the next and final book of the series will be. It's out in May of 2023 and called Pa Salt. You can bet I'll be reading that one! :-)