Impetus Dire circumstance leads Emily to take extreme measures against both the Graysons and those closest to her. Details Casts Videos Galleries Posters Season Lists Title Impetus Genres Drama Mystery Release Date 2014-05-04 Episode Runtime 00 Hours 43 Minutes Season Number 3 Episode Number 21 Production Companies ABC Studios, Temple Hill Entertainment Emily VanCamp... Emily Thorne... Madeleine Stowe... Victoria Grayson... Joshua Bowman... Daniel Grayson... Nick Wechsler... Jack Porter... Gabriel Mann... Nolan Ross... Christa B. Allen... Charlotte Grayson... Barry Sloane... Aiden Mathis... Henry Czerny... Conrad Grayson... ABC's Revenge Trailer Season 1 - Pilot Promo HD (Trailer) Original Size (3000x1688) Original Size (1920x1080) Original Size (1280x720) Original Size (1920x1080) Original Size (3539x1991) Original Size (2364x1330) Original Size (3840x2160) Original Size (3840x2160) Original Size (3600x2025) Original Size (1920x1080) Original Size (1920x1080) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (2990x1682) Original Size (3840x2160) Original Size (3000x1688) Original Size (2672x1503) Original Size (3440x1935) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1000x1500) Original Size (1708x2562) Original Size (1000x1500) Original Size (1500x2250) Original Size (1708x2562) Original Size (2000x3000) Original Size (2000x3000) Original Size (1500x2250) Original Size (628x942) Original Size (1000x1500) Original Size (1000x1500) Original Size (500x750) Original Size (1708x2562) Original Size (1000x1500) Original Size (680x1000) Original Size (680x1000) Original Size (2000x3000) Original Size (2000x3000) Original Size (680x1000) Original Size (680x1000) Original Size (680x1000) Original Size (500x750) Original Size (600x900) Original Size (600x900) Original Size (706x1000) Original Size (685x960) Original Size (680x1000) Original Size (680x1000) Original Size (680x1000) Original Size (1333x2000) Original Size (2000x3000) Original Size (2000x3000) Original Size (1708x2562) Original Size (1708x2562) Original Size (1708x2562) Original Size (1000x1500) Original Size (680x1000) Original Size (501x750) Original Size (500x750) Original Size (600x900) Original Size (600x900) Original Size (631x900) Original Size (600x900) Original Size (500x750) Original Size (1708x2562) Original Size (946x1419) Original Size (946x1419) Original Size (960x1440) Season 1 22 Episode(s) 2011-09-21 Season 2 22 Episode(s) 2012-09-30 Season 3 22 Episode(s) 2013-09-29 Season 4 23 Episode(s) 2014-09-28