Tonight on ABC 20/20 - Elizabeth Vargas sits down with Therese Serignese, one of the women alleging that Bill Cosby sexually assaulted her. 10/9c | ABC 20/20

WATCH: How ABC News' Robin Roberts, Dan Harris, Amy Robach and Elizabeth Vargas found strength in each other during difficult times: http://abcn.ws/2eJ7hEe | Good Morning America

REAL-LIFE ‘WONDER BOY’: Elizabeth Vargas reports on her nearly 3-year journey with Nathaniel Newman, a boy who was born with a rare genetic syndrome called Treacher Collins and an emotional story mirrored in the popular book “Wonder.” http://abcn.ws/2hyGhGS | ABC World News Tonight with David Muir

Two men were charged with carrying out a "swatting spree" over one week in November after hacking into a dozen Ring doorbell cameras across the country, NewsNation local affiliate WHNT reported. According to a federal indictment, the two are accused of calling 911 in the location where their victims lived and making fake reports, intending to generate an emergency response to their homes. One of them used the Ring devices to live stream audio and video on social media as authorities responded to

Elizabeth Vargas' big surprise for the The Wolfpack boys on ABC 20/20 last night? Their favorite actor, Robert DeNiro! | ABC 20/20

Elizabeth Vargas opens up on alcoholism. | Battling Addiction