About C.K. Kelly Martin C.K. KELLY MARTIN's bestselling debut novel, I Know It's Over, was published in 2008. It was followed by One Lonely Degree, The Lighter Side of Life and Death, My Beating Teenage Heart and the sci-fi thriller, Yesterday. A graduate of the Film Studies program at York University, Martin currently resides in Oakville, Ontario. Books by C.K. Kelly Martin Stricken by (author) C.K. Kelly Martin Ages 10 to 13 Grades 5 to 8 Delicate by (author) C.K. Kelly Martin Resources Resources Ages 13 to 18 Grades 8 to 12 The Sweetest Thing You Can Sing by (author) C.K. Kelly Martin Ages 13 to 18 Grades 8 to 12 Yesterday by (author) C.K. Kelly Martin Ages 14 to 18 Grades 9 to 12