Kate Johnson, also known as Cat Marsters, is a British author who writes in the Paranormal and Speculative Romantic Novel genres.

Johnson lives in Essex and attended Joyce Frankland Academy.

[2][1][4][5][6][7] She became a published author at the age of 23 with the sale of her first novella, She Who Dares, under her pen name Cat Marsters, and the following year sold her first book under her own name, I, Spy?.

[1] The novel was self-published, which made it the first time an indie publication won an award from the Romantic Novelists' Association.

Under the name Cat Marsters she wrote erotic romance, which won the Wisconsin Romance Writers' Silver Quill and Passionate Ink's Passionate Plume award.