This Side of Evil — Carolyn Keene

Scenic Montreal becomes the arena for a deadly game of cat and mouse

Nancy flies to Montreal on an "easy" case and finds herself in a vicious duel of wits with a master criminal. What appears to be petty blackmail proves to be a million-dollar operation.

The trail leads to a TV newscaster with a shady past, an heiress without a future, and a society doctor who knows the wrong people. But when Nancy gets too close, the trap is set, using her friend George as bait. She has no choice but to accept the challenge -- even if it leads to certain death.