Sarah Pearse came in hot with the trilogy finale of the Elin Warner detective series, and we finally figured out who has been following Elin! Let me just say I was not expecting that. 

"The Wilds" is a thriller that takes place in a remote Portuguese national forest. Detective Elin Warner is visiting with her brother, Isaac, under the guise of a sibling getaway to re-connect, but Isaac has other motives for getting Elin to Portugal: persuading her to use her sleuthing skills to solve the disappearance of Kier, the twin sister of Isaac's friend, Penn. Mix in a creepy campsite with mysterious individuals who don't want to be found and well, it's definitely a mystery. 

Pearse does a great job with character development, pacing, and intrigue - I read this book in just a few days. I couldn't stop thinking about Elin and Kier, and I just needed to know if Kier was OK. While the book is 400 pages, the chapters are short and definitely hook you in. 

I've read the first two books in the series; you don't need to read them prior to book three, but it does make the story richer. If I had to rank Pearse's trilogy, "The Sanatorium" is #1, "The Wilds" is #2, and "The Retreat" is #3, but it's a tough rank, because I love her writing style and plots.