Starting a new business could prove to have dire consequences with Gunn & Chen Investigations' latest case.

Fresh off their victory of taking out a dangerous serial killer, Nick Gunn & his partner Cindy Chen are settling into the life of private investigators.

But it's not all insurance fraud and catching cheating spouses; a mysterious woman seeking help to find her kingpin husband forces Nick to revisit his old Major Crimes Division stomping grounds, where the air still smells of stale coffee and desperation. All bets are off when Nick and Cindy discover the seedy underworld, complete with its dimly lit back alleys and the constant threat of violence, and the Mobs' ruthless efficiency are involved, and the tangled web of deceit points to an unexpected, shadowy figure known only as The Ghost.