Sara Johnson appeared at The Poisoned Pen in Scottsdale on September 9 to discuss her debut novel, Molten Mud Murder. The book tells the story of Alexa Glock, a forensic odontologist, who finds herself in Rotorua, New Zealand, investigating a body found in a molten mud pit. The victim, a city councilman, had trespassed on an island sacred to the Maori. When Alexa visits the island, she is promised the same fate.