Sara B. Elfgren started her career in the film industry as a screenwriter. As a script doctor, she has been involved in several Swedish film and TV-productions. She has a Master's Degree in Film Studies. Mats Strandberg is journalist and a regular columnist for Sweden's biggest evening newspaper Aftonbladet. The organization Sveriges Tidskrifter (Sweden's Newspapers and Magazines) awarded him the title Columnist of the Year in 2004. In 2008, Sara B. Elfgren met Mats Strandberg. They quickly realized that they shared a passion for supernatural stories about young adults. Soon the idea to write together was born. In August 2009 they began working on what would become the novel The Circle with its two sequels.