Alec decides to meet Jason's mother and Kiera learns what the machine will be used for. Kellogg discovers what his future doppelganger has planned in the present and asks Kiera to help stop him.moreless
The killer: Charlie Monahan, the victim: Ken Leung
Charlie is a social worker and Ken is one of the leaders of the Golden Tiger Triad gang, the largest in the city. When Ken's bullet ridden body is found in his home, two other murder victims' bodies are also discovered. Detectives Flynn, Vega and Lucas each take point on one of the investigations. Eventually, Betty ties the three killings together with forensic evidence.
Simon tries to regain what was taken from him. Helen sets her deadly plan for the town in motion. Camille seeks guidance from Peter. Nikki tries to prove that Victor is a danger to Julie.moreless
The Winship family tries to deal with the fact that Camille is back from the dead. Simon tries to see Rowan, who believes that Simon is a hallucination. Julie continues to look after Victor. Tommy leans on a suspect in Lucy McCabe's attack.moreless
The investigation into the murder of a Chinese fortune teller in Portland's Chinatown leads the unit to a laundry service that appears to be a front for illegal gambling activities.
Clarke and Bellamy search for supplies as winter nears. Meanwhile, Octavia helps a friend escape.
Bellamy and his crew search for Octavia. Meanwhile, Raven notices a connection between Finn and Clarke.
Finn and Clarke's new relationship becomes a little more complicated. Octavia is knocked out and abducted by a Grounder.
100 young criminals that have been living in space on The Arch have been sent to Earth to test if it has become inhabitable after 97 years of being abandoned after a nuclear war.moreless
While the Underwoods gain a mysterious new ally, Francis open negotiations with a Chinese billionaire. Meanwhile, Lucas attempts to expose the Vice President.