Originally a secretary for Dr. Heinlein, she underwent human experimentation with a rare flower called the Third Sun when forced by Stern's criminal syndicate Killer-in-Killers (aka Kirein-Killers), resulting in her transformation into a witch.
To get away from the syndicate, Linda drives off in a speedboat. While on a speedboat, Fujiko Mine shoots Linda while practicing using Lupin III's Walther P38. Her speedboat goes off course and goes up in flames. She managed to swim to safety by a rock with Lupin catching her attention. After Fujiko went off with the speedboat, Lupin III asks her name and compliments her. Shortly after, they were pursed by the Killer-in-Killers who were shooting at them. The boat exploded thanks to Daisuke Jigen saving them, but by the time Lupin wants to introduce her to him, she had already gone.
Lupin and Jigen managed to track her down on an island thanks to Lupin detecting the scent of "Pink Bed" and sees her by a Third Sun flower bed. Very quickly Lupin falls in love with her as he kisses her hand. She falls in love with him back smiling and playing tag with each other as they run around a tree. He then makes a promise to her as she can no longer survive without the flowers.
The plane sprays gasoline that then using what appears to be a rocket launcher, Lupin fires at the flower bed, forgetting that Linda needs the flowers to live. Lupin wants to save her, but Dr. Heilein shoots her.