Shards of Time (Nightrunner, #7)

Reach for this book when your older teen is seeking a high-stakes fantasy that balances dark, supernatural mystery with a deeply committed romantic partnership. It is particularly resonant for young adults who value loyalty and are navigating their own sense of identity or feeling 'different' from the world around them. The story follows master spies Alec and Seregil as they investigate a gruesome murder on a sacred island, only to discover an ancient, ghostly evil that threatens the entire kingdom. While the plot is driven by magical suspense and detective work, the emotional core lies in the profound bond between the two male protagonists. Parents should note that this is the final installment of a long-running series, featuring mature themes of death, trauma, and a long-term LGBTQ relationship. It is an excellent choice for 16 to 18-year-olds who enjoy sophisticated world-building and characters who must confront their past fears to protect their future.