Alex enlists a friend to investigate Ginny's murder even further, but Mr. Johnson intervenes. Meanwhile, Kane and Cassandra head to the city of angels to stop a sniper from executing a drug cartel's plan for revenge. Detective Brown assists the FBI in an investigation regarding missing ex-special ops in Vegas.

After discovering some unnerving news, the House bets on whether Alex Kane can stop a serial killer from striking before Halloween. Meanwhile, Det. Brown is hot on Cassandra's tail and Mr. Johnson intervenes.

After an attack on a truckload of drugs and cash, the House sends Alex Kane to stop the violence between the gangs. Mr. Johnson has a conversation with Cassandra about her priorities. Meanwhile, Agent Rose Nolan is in hot pursuit of the truth about the House.

Alex receives a major clue about Ginny's disappearance and teams up with Cassandra to make sure that his next assignment might actually lead him to his ex-wife. Knowing that Mr. Johnson can't be trusted, they know that they have a limited time before he might sabotage this mission. Meanwhile agents Cal Brown and Rose Nolan make a major breakthrough and are able to identify someone who works for the house.