Angie and the team's investigation of a death in a spa takes a turn when the body is discovered to be infected with a mysterious disease.

Motive is an unconventional way to watch a crime drama unfold. Each episode begins by revealing not only the victim, but the killer as well. It's not a "whodunit", it's a "whydunit", a question faced by spirited female Vancouver homicide detective Angie Flynn as she begins to piece together the clues from the crime. How are the victim and killer connected? What is the motive? As the mystery unfolds, the audience navigates a complicated maze of clues alongside the detective and her team.