[1] After directing Witchblade, Hemecker served as the showrunner, writer, and producer for the subsequent television series, which aired from 2000 to 2002.
[1] Hemecker has directed episodes of Renegade, Dead at 21, Millennium, Numb3rs, V, Blue Bloods, and Nikita.
In 2014, he joined as a recurring director on The CW superhero series The Flash.
He directed the first-season episode, "Tricksters", where Mark Hamill reprised the role of the titular supervillain.
He also directed the second season crossover episode with Arrow, "Legends of Today".