Tim Avery, an aspiring cartoonist, finds himself in a predicament when his dog stumbles upon the mask of Loki. Then after conceiving an infant son "born of the mask", he discovers just how looney child raising can be.

Margaret O'Halloran sets out to discover whether a dog killed her friend and mentor, Harry Bowman. To do this, O'Halloran must delve into the dark secrets of her home town and what she finds not only turns her world upside down, it could cost her life.

Margaret O'Halloran is a dog trainer with a unique talent and a nose for a mystery. Now an old lady has been savaged to death, her faithful dog is the prime suspect. But Margaret smells a murderer of the two legged variety.

An eco-bomber is terrorizing the city. Margaret O'Halloran and Kelty are called in to assist only to discover that the bomber could be Margaret's idealistic younger cousin.