"The Coincidence of Callie and Kayden" is a young adult novel by Jessica Sorensen. It follows the intertwined lives of two main characters, Callie and Kayden, who both struggle with their past traumas. As they navigate their personal challenges, they find solace in each other’s company. The story explores themes of friendship, love, and healing. As Callie and Kayden confront their fears and secrets, they develop a deep bond that helps them grow and overcome their difficulties. The novel highlights the importance of connection and support in the journey toward self-acceptance.