"Baby Reindeer" fans felt that there was a lack of effort in concealing the identity of the real Martha.

Netflix dropped the British black comedy drama-thriller on April 11. It is reportedly based on series creator Richard Gadd's real-life experience of being stalked by a Scottish woman and sexually assaulted when he was in his 20s.

Gadd said he changed the identity of those involved "to the point she wouldn't recognize herself." He also urged fans not to track down the people on the show and stop speculating about their identities because that's "not the point" of the series.

However, fans didn't have a hard time identifying the real-life Martha, who also came forward just days after the show aired. Many called out Gadd because they felt that the production didn't do a good job of keeping Martha's real identity private.

"Richard Gadd 'We did everything to hide Martha's identity where she wouldn't recognize herself in the show!'" one wrote along with a clip showing tweets and scenes from the show supporting claims that the real Martha was Fiona Harvey. "Internet after one day 'Found her! [multiple face with tears of joy emoji.]'"

"#BabyReindeer Is it just me, but does anyone suspect it's a setup like they didn't hide identity 1 bit, also Internet sleuths are well known, if it is real I'm invested either way," a second user tweeted.

A third person added, "Gadd & the program makers don't seem to have made much effort to disguise the identity of one of the people. When you advertise something as a true life story, people will be curious, & I'm astonished the program makers didn't take more care in that respect #babyreindeer."

The Sun also shared several screenshots of Harvey's tweets seemingly featured on the show. For instance, one of her tweets from 2017 read, "I'm a diet coke girl and having one now sun streaming in my window. I keep waiting for diet coke man!!!!!!!!!!!!!!!!"

On the show, Martha always orders a diet coke when she visits him at the bar where he works.

Harvey, 58, blasted the show after its premiere. She also revealed that she would take legal action against the streaming giant, and she would represent herself.

"I have a claim against Netflix as this is being billed as part of a true story," she told The Scottish Sun. "There's a fat actress that's supposed to be me. I'm a highly competent lawyer. I'd have to do it myself. I'm very good. I have a photographic memory and can memorize huge files. I was top in my school at everything."

Harvey also seemingly downplayed the allegation that she stalked Gadd, saying she was pretty while he wasn't as good-looking as Brad Pitt.

"I am very attractive. He's not Brad Pitt," Harvey said.