Spirit Sickness

Description for SPIRIT SICKNESS by Kirk Mitchell:

A fire-gutted police cruiser found in a remote part of the Navajo reservation bears witness to a horrific crime: inside are the bodies of a tribal patrolman and his wife. As BIA Investigator Emmett Parker and FBI Special Agent Anna Turnipseed know, a cop's murder is never simple, raising countless questions and suspicions. When another murder is discovered, the case explodes into an otherworldly realm. Both Parker, a Comanche, and Turnipseed, a Modoc, are well acquainted with the eerie shadowland between native myth and modern homicide investigation. Now they will have to touch minds with a murderer who has woven personal madness with Navajo myth to create his own reality--and with it the need to kill and kill again.

This is #2 in An Emmett Parker and Anna Turnipseed Mystery.