* Gemma - the protagonist of the story, who is abducted and taken to Brazil
* Ty - a boy who Gemma meets while she is being held captive in Brazil, who helps her escape
* Keith - a man who sexually abuses Gemma while she is being held captive in Brazil
* Beth - Gemma's mother
* Simon - Gemma's stepfather
* Lizzie - Gemma's younger sister
* Detective Inspector Banks - a detective who is investigating Gemma's disappearance
* Sergeant Roberts - a police officer who is working on the investigation of Gemma's disappearance