"Bone Crossed" is the fourth installment of Patricia Briggs's Mercy Thompson series and it is definitely advisable to read these books in order as the plot continues from the earlier books and there is no - or hardly any - explanation of what has happened before.
The story picks up exactly at the point where Iron Kissed: A Mercy Thompson Novel
left off: Mercy Thompson has just survived a violent attack and rape, and has finally accepted her neighbour and alpha of the local werewolf pack, Adam Hauptman, as her mate. I had been worried somewhat that the traumatic events would be dropped too quickly but this is not the case. Mercy, despite her resiliance, does suffer from the psychological trauma, but Patricia Briggs manages to include this facet of Mercy's character smoothly and naturally, neither making her an object lessons of the aftereffects of rape nor getting flippant about it. Very well done.
Naturally, new problems raise their ugly heads as soon as the last ones have been dealt with. Mercy is now threatened by Marsilia, lady of the local vampires, who does not refrain attacking Mercy's friends to get to her. To get out of the way and to allow Adam to negotiate with Marsilia, Mercy travels to Spokane to help an old friend with a ghost problem. But being who she is Mercy immediately finds new vampire problems there.
Like the previous three books, this is a thoroughly enjoyable and gripping book. There was a point when I thought that there were almost too many different problems facing Mercy at the same time, but apart from this, "Bone Crossed" was great fun and can be recommended for fans of vampire/werewolf/mystery stories.