I grew up with Logan’s Run, first the movie and then the series. There were many things I liked about them, including the characters’ needs to live beyond their assigned roles and years. Ashes of Twilight captures that same feel, but without being a duplicate of this classic. Kassy Tayler leads us into her world, bit by bit through Wren’s eyes. Indeed, this was one of the things I enjoyed about the writing: the story showed me Wren’s world instead of telling it to me. The intensity and action were sprinkled with Wren’s inner thoughts and concerns, keeping the tension high throughout the book. 
Now, there was really only 1 thing I didn’t care for in this book, and it was the near instant love, yet no sex. Please, a set society trapped under a dome for numerous generations is going to have birth control freely available, or it would have collapsed due to over population after a few generations. It’s OK to be 16 or 18 and in lust and have that lust turn to friendship , and perhaps more later on.