Calli Barnow, Toronto P.I., is back with an undercover assignment that takes her from the world of big-city advertising to the poker tables of Niagara Falls. What begins as a simple case of fraud turns sinister as the bodies mount. At the same time Calli is forced to deal with her sometimes comical sometimes traumatic personal life. Even the weather seems determined to test our endearing heroine, as she is forced to push past her mental and physical limits when threatened by a brilliant psychopath.