After the success of Serial Season 1, HBO green-lit a documentary series to recap the case along with new information about Syed's appeal process.

HBO Documentary Films is in production on a follow-up episode to the series, featuring exclusive access to Syed leading up to and following his release from prison.

The website's critical consensus reads, "A worthy Serial supplement that isn't without flaws, The Case Against Adnan Syed fleshes out the life of Hae Min Lee and gives context to in the complicated boon of true crime entertainment.

"[5] Metacritic, which uses a weighted average, assigned the series a score of 66 out of 100 based on 16 critics, indicating "generally favorable reviews".

[6] Critics have argued that the docuseries has a "pro-Syed bias" and is "armed with an agenda", though its creators billed it as an objective view of the case.