Just finished Emma Stonex's debut,
The Lamplighters. This is a really strong novel. Inspired by a real event, it starts with the mysterious disappearance of three lighthouse keepers just before one is set to be relieved. They appear to have disappeared without a trace, with the lighthouse locked from the inside, and various other details leading only to confusion.
The novel jumps back and forth between 1972, the year of the mysterious disappearance, and 1992, the year a novelist begins poking around the story, dredging up old memories among the survivors. Put together much like an epistolary novel, it combines newspaper clippings, letters, interviews, and inner thoughts presented as though they are journal entries, all interspersed with more traditional narrative sections that push the story forward.
Part ghost story, part mystery, part psychological thriller, it's at times hard to tell which parts are real and which parts are only happening in the characters' heads. As the 1972 timeline builds to its climax - revealing what really happened to the missing men - the 1992 timeline makes it clear the novel is really less about the mystery, and more about what the mystery left behind. About how the survivors and the community were affected by what happened. Even at the end, however, the mystery in some way remains a mystery. The reader learns what happened, but the survivors don't. The missing men come to their own finales in 1972, including some profound understandings of their own failings, but the women they left behind in 1992 can only be consoled by their own theories, unable to gain the knowledge lost on the lighthouse two decades prior.
This is the best debut novel I've read in quite some time. Definitely on the recommend list, and I'll very much be looking forward to what she puts out next.
Edit: After more reading, this isn't a true debut. Stonex has been published before under a pseudonym. This is her first novel under her real name.