All of the Native American/White Girl romances I've ever read have been historicals. It's interesting to see that dynamic played out against a modern background. Michael Youngthunder's tribe didn't slaughter Renata's family, nor did they adopt her after her family died leaving her stranded between the east and west coasts. Michael is just a regular guy, struggling with how much his Native heritage influences his modern life; whether he's become too white. Renata is interested in learning more about his fascinating heritage, but Michael's been burned by "white women" before who pretended to care about "the Indian stuff" but pulled back when it became too "intrusive." Renata wants to show him she accepts him for who he is, but Michael is not even sure who that is himself. How these two resolve their differences and honor his heritage is enthralling to read about. Written in 1992, though, the terminology (use of Indian throughout, rather than the more currently accepted term of Native or Native American) is a little bit dated.
Action on the mystery of the Body at the Lake is advanced, but for the first time by describing interactions that took place without either of our main characters present. This is okay for those who've been reading the series all the way through, but someone who just picks up this book independently of the others might become confused.
All together, I found this the best of the series so far, and am still looking forward to the rest of this series.