Episode 4: C: The Visual Device will Laugh – INTERCEPTER

Yamaguchi, an old friend of Togusa's and a police detective working in the Laughing Man task force, is murdered after he calls Togusa, requesting to see him concerning what Yamaguchi terms "suspicious internal activity" by superiors in the police department. At Yamaguchi's wake, Togusa is approached by Yamaguchi's wife, who delivers an envelope from him to Togusa that contain a series of strange photographs. Upon scrutinizing the photographs, Togusa realizes that none of them are taken using a camera. Continuing his investigation, Togusa interviews another detective in the Laughing Man task force, who coincidentally mentions that the task force is waiting to bug a primary suspect in the case with cybernetic surveillance devices called "interceptors". The interceptors allow constant audio and visual monitoring of the subject via their own senses. Togusa concludes that the Laughing Man task force members were bugged with these devices illegally for monitoring.