Emily and JJ navigate a new relationship after JJ and Wills separation six months after Evolution season 17. Will they realize they've been in the longest slowburn of almost two decades, or continue to fight against what they really mean to each other?

Ten years ago, Emily Prentiss was forced to give up her two year old daughter. Flash forward, and Prentiss is now chief of the London Interpol office. Emily's old team in Quantico find themselves in a sticky situation with a suspect, who's only twelve. This mysterious brunette has a hard past that JJ can't seem to just overlook, and she plans on helping her. Will they find out who she really is, and how far will Prentiss go to protect her child? Slowly, all the walls Emily built up to protect herself come crumbling down, and her deepest secrets and promises are exposed. BOOK ONE

Kai Bartley and Amelia Shepherd embark on a new venture and move to London. Watch how their romance evolves.