Task: Explanation
Input (English): The First Doctor Adventures, announced in September 2017, is a Big Finish Productions audio play series based on the British television programme "Doctor Who". It sees the return of David Bradley as the First Doctor, a role originated by William Hartnell from 1963 to 1966, as well as by Bradley on television in the episodes "The Doctor Falls" and "Twice Upon A Time". David Bradley also portrayed William Hartnell in the BBC bio-drama, "An Adventure in Space and Time". Question: Which character does the star of Doctor Who: The First Doctor Adventures play in the Harry Potter series? Answer: Argus Filch
Output (English):  It sees the return of David Bradley as the First Doctor, a role originated by William Hartnell from 1963 to 1966, as well as by Bradley on television in the episodes The Doctor Falls and Twice Upon A Time.