Secrets of the black thorns

Naomi a 17 year old girl who has been an orphan for the last 10 years of her life her parents suddenly went missing after her 7th birthday and now being older she is determined to discover the truth. She creates a gang called the black thorns filled with other orphans of similiar origins with a mission to discover the truth and perhaps a even darker secret hidden by the government they face unexpected turns and troubles leading to the discovery of a code naomis parents left her. will they discover and solve the ultimate secret?