Opal is Jennifer L. Armentrout's third addition to her Lux series, and it's the most intense installment yet. After Dawson's return, rescuing Beth becomes everyone's newest mission, but it won't be easy. Daemon, Katy, and the others struggle to invade a DoD facility, but more importantly, they don't know who to trust.
This story is fast-paced and crammed with emotion, but it ends with a giant cliffhanger. My favorite part of Opal is that it was a clear point of character growth for many of our main characters. Readers get to see Dee mature and lose her bubbly naivety, while Daemon begins to allow himself to show vulnerability.