When Rebbeca' sister Diana returns home after being away for a while things seem odd. Diana's desperately trying to hide secrets from her sister. Rebbeca takes the detective approach to work out what's going on only to find Diana Is in serious trouble. Before Rebecca could get the truth from her sister, Diana commits suicide. Being convinced her death was more than just suicide, Rebecca searches deeper for answers in effect putting her life at risk.

“疾速天使” 系列是当今颇具影响、广受青少年喜爱的小说，作品将科幻与奇幻元素巧妙地融为一体，充满了速度感、悬疑感和冲击力。六个孩子被送入实验室接受残酷的基因改造，变成了长有翅膀拥有超能力的鸟孩。他们逃离、反叛，在残酷的试炼中发现他们的力量正是为了这个世界而存在。 　　故事极像快速推进的大片，充满悬疑的故事、环环相扣的谜团、匪夷所思的超能力。不断切换的场景，第一人称的叙述方式，带读者迅速进入故事情境。让读者与六个孩子一起遭遇挫折、触摸感动，踏上探索生命真谛与未来命运的旅程！