Half Man follows both successes and much controversy over Gadd’s first project, Baby Reindeer, which was shown on Netflix.
Adapted from his one-man show, Baby Reindeer is based on the true story of how the comedian, from Wormit in Fife, was stalked by a woman after a brief, innocuous encounter in a London pub.
The drama also depicts how he was groomed and raped by an older man he considered a friend, and the harrowing impact on his life.
It won six Emmys, two Golden Globes and received the most nominations at this year’s Bafta TV awards – though won only one for Jessica Gunning as best supporting actress.
Although steps were taken to prevent identification of some of the characters, viewers speculated about the real identity of stalker, Martha, as well as that of a male TV writer who rapes Gadd’s character, Donny.
It led to real-life figures getting touch with police after being linked with the programme.
Last year Netflix has failed in its attempt to persuade a judge to throw out a defamation lawsuit brought by Fiona Harvey, the woman who inspired the stalker character in Baby Reindeer.
Ms Harvey claims the streaming giant told “brutal lies” about her to more than 50 million viewers around the world.
The show is billed as “a true story”, but a judge concluded certain key events, like a conviction for stalking, did not happen in real life.
Netflix has vowed to “defend this matter vigorously”.