When a caver is found dead deep in a cave, it is clearly the work of a serial killer. The dangerous hunt for a killer deep underground will require FBI Special

When victims of a new serial killer are found hidden underground in abandoned storm shelters and silos across the rural Midwest, FBI Special Agent Faith Bold kn

When a trail of arcane murders threatens to expose alchemical secrets, FBI Agent Faith Bold and her canine partner must decipher cryptic clues that are tied to

Victims found dead in their homes, with no apparent connection. An ex-con FBI agent, who no longer cares for the rules. A crazed killer willing to stop at nothi

When victims are found murdered in the vicious world and bad neighborhoods of street dog fighting, at first glance it appears to be gang violence. But as FBI Sp