In summer 2013, he joined The CW series The Tomorrow People, as a director of photography and director. During the course of the series' one-season run he directed 4 instalments ("Sitting Ducks", "Superhero", "Smoke and Mirrors", "Kill Switch").[1][2]
After having had worked for Greg Berlanti on Tomorrow People, Berlanti brought Downs on to his new DC Comics superhero series The Flash. Downs directed the freshman season's fifth episode, "Plastique", featuring the introduction of the titular villainess. He returned to helm "Grodd Lives", the season one finale "Fast Enough", the second season's seventh instalment, "Gorilla Warfare", the third season's eighth, thirteenth, fourteenth and seventeenth instalments, "Invasion!", "Attack on Gorilla City", "Attack on Central City", "Duet",[3] and the forth season’s eighth instalment, "Crisis on Earth-X, Part 3".
Downs also worked on Flash sister-series Arrow, directing the season three episodes "The Return" and "The Offer"; as well as the season five episode "Penance".
In early 2015, Downs directed a 3-minute network presentation for future Flash/Arrow spin-off DC's Legends of Tomorrow. It was shot over the course of one night. The footage ultimately clinched the series order for the show in May 2015. Downs was later confirmed to return as a director for the first season.[4] His first episode was the third, "Blood Ties".[5] He went on to direct the fifth episode, "Fail-Safe"; and the first-season finale, "Legendary". He directed the season two premiere, "Out of Time", and the ninth instalment, "Raiders of the Lost Art".[6] He directed season three’s tenth instalment "Daddy Darhkest" and the third season finale "The Good, the Bad and the Cuddly".
Dermott Downs directed three episodes of the NBC show Blindspot for the season one episode #19: "In the Comet of Us"; the season two episode #43: "In Words, Drown I"; and the season five episode #95: "Fire & Brimstone."
Dermott Downs directed three episodes of the DC Universe show Doom Patrol including the season 1 episodes "Donkey Patrol", "Danny Patrol","Ezekiel Patrol" and the season 3 episode "Possibilities Patrol".
Dermott Downs directed two episodes of the USA Network and SyFy show Chucky which were the episodes "Give Me Something Good to Eat" and "I Like To Be Hugged"