In the story, Cassie forms an odd friendship with her stalker (Olly Alexander), and tries to support her younger brother, Reuben, as their father, Marcus (Neil Morrissey), fails to cope with the death of their mother.

One day, shortly after having a one-night stand with her Israeli co-worker, Yaniv (Daniel Ben Zenou), Cassie is approached by an artist at her work.

Shocked, Cassie looks through the website and discovers an entire collage of photos of her, some showing her standing by her bedroom window, dressed only in her underwear.

Visibly shaken, Cassie confides in Maddie (Charlene McKenna), an acquaintance who lives a floor below her, and, upon further examination, realises that the photos of her bedroom window were most likely taken from the abandoned office building opposite.

Cassie discovers that her father is an alcoholic, and has not been sending Reuben to school as he promised, and feels angered by his inability to pull himself together after the death of her mother.

At the club, Cassie sees that some of the photographs and videos of her and Reuben that Jakob took are being displayed on the screen and returns home abruptly, shocked.

Soon after, she is visited at her house by her father, who reveals that he has stopped drinking and is planning a trip to Italy with Reuben to clear his head and start painting again.

This confirms that Sid found Cassie all those years ago in New York and they shared a happy relationship until it ended for unknown reasons.

[1] Part one received a generally positive response, with reviewers expressing slight apprehension in light of the ending for "Skins Fire".

Den of Geek writer Caroline Preece said that "Skins Pure" fit in with the style of Cassie's original episodes, as these were "the most aesthetically beautiful" of the series, and, in relation to the previous episode, commented: "This is a different kind of young adulthood than the one encountered by girls like Effy Stonem, and that doesn't make it any less real or worth exploring."