Something sinister is happening on the streets of San Francisco. Suicides by hanging. Beautiful dead women with syringes hanging in their arms. Separate unconnected cases, and it's up to Police Inspector Keller and Park to find the connection. Their investigation leads them through a complex labyrinth of clues and evidence: Suicides, homicides, terrorism, drug trafficking and human trafficking! Will Keller and Park find out who's behind this intricate network of evil? Keller and Park will always give it everything that they've got. But will all they've got be enough, or will they have to pay the ultimate price?