 First Light is categorized as a science fiction and mystery novel . Katie <unk> from the Philadelphia Inquirer also listed the novel as a " slow @-@ to @-@ unfold mystery combining elements of science and history with an appealing note of fantasy " . Kirkus Reviews classified the novel as an " ice @-@ age mystery " as both Peter and Thea " discover one another 's worlds as well as the truth about themselves " . Connie Tyrrell Burns from School Library Journal found the novel to be " an exciting , engaging mix of science fiction , mystery , and adventure " . 
