B: The Beginning

A double murder involving `Killer B' is carried out immediately prior to Keith's return to the RIS. A military vehicle is stolen, to be used in an unknown group's rampage.

Keith disagrees with the RIS when they investigate a death apparently linked to Killer B. The appearance of another body leads to a stake-out of a high-profile party.

As the poison gas release ticks ever closer, Kaela engages in battle with the hackers. Keith and Boris pursue Koku and one of the gang outside the city.

Keith and Koko pay separate visits to the Royal Library. In Keith's apartment, he and Lily discuss her thoughts on Killer B and the case.

The team members struggle to come to terms with the attack on one of their own, as well as the realisation that there is a traitor on the inside. Koku discovers who Canopus is.

After confronting Keith on the roof of the hospital, Koku agrees to meet him at a temple the next day; Keith is declared a murder suspect.