Inside the Sun is the final book in The 8th Island Trilogy by author/illustrator Alexis Marie Chute.
The young adult series follows Ella Wellesley, a teenager with cancer, and her eccentric family. In the first book, Ella, her mother Tessa, and her paternal grandfather sail into a parallel universe while on a cruise in the Spanish Canary Islands.
In this final chapter of the Wellesley’s adventures, Ella and Tessa each grapple with revelations about their past — and sacrifices they know they’ll have to make to save their new home.
Inside the Sun has heart, high stakes, and kaleidoscopic worldbuilding reminiscent of L’Engle’s A Wrinkle in Time. This story of an estranged family reuniting in an extraordinary universe is the kind of optimistic and sincere SFF that’s particularly refreshing given our current cirumstances.