After watching the film "Watching the Detectives" by Chris Kennedy, a young researcher traces the manhunt conducted on the reddit.com forum after the 2013 terrorist attacks in Boston. Examining archival media from the newspapers at the time as well as fictional reinterpretations of the events, she compares how FBI agents, journalists and Internet users analyzed a mass of amateur footage that led to the identification of the terrorists. As she becomes fascinated by the spectacle of their different forms of expertise and authority, she herself gradually loses sight of the gap between what the images actually show and what she wants to see in them.