He shared insights on casting Aparshakti Khurana and Ishwak Singh, stating that they, along with Rahul Bose, were perfect fits for their roles. Their dedication allowed Sabharwal to realize his vision for the characters Ashok and Pushkin.

In addition to directing, Atul also wrote the film's script, which centers on a deaf and mute man facing serious espionage allegations. The plot takes a twist when a sign language expert is brought in to assist the government with the case.

Atul, known for Aurangzeb and Class of 83, revealed that he was inspired by Berlin in a short story he wrote, sparked by an idea he had while visiting a cafe.

Berlin is exclusively available for streaming on ZEE5.