Island of Glass by Nora Roberts (2016)

Had to finish the last of the Guardians Trilogy. Though this series seems to find more of a balance between the six characters - they do function and evolve as a team, but then each book is focused on one of the couples. This time it was Doyle and Riley's turn. He is the immortal, who has suffered for centuries, as those he loves or becomes close to, die; and she is the archaeologist, scholar, adventuress, who also happens to turn into a wolf three nights a month. Of course they are suited for each other, it just took a bit longer for them to discover this than their companions Bran & Sasha and Anika & Sawyer.

They have returned to Bran's home in Ireland to try to figure out where to look for the third star - the Ice Star. Turns out he has built his home on the ruins of where Doyle's family home once stood. Once they find the star, they have to find the Island of Glass and return all three starts to the goddesses.The magic is a bit hokey, the fight scenes not too engaging, and I figured out what Doyle and Anika would get as rewards from the goddesses, but it was a fun story anyway. I like the daily interactions better than the main events, and the subplot of the three guys getting their ladies rings. I have wondered what has happened to the old gods of yore, as has Neil Gaimon in some of his books, so there is a satisfaction to hear a fairy tale of devotion to a quest with superheroes of sorts.