A drama set at a fictional cable-news network re-creates actual events to show how they’;re covered by “News Night” anchor Will McAvoy and his staff. Experiencing a loss of viewer trust from the Genoa retraction, the news team treats a breaking story about the Boston Marathon bombings with guarded caution. Maggie and Elliot are sent to Boston, and after he has an allergic reaction, she steps in to report in impressive fashion.