Double Vision by Colby Marshall is a much-awaited 2nd Dr Jenna Ramey novel - she of the superpower that allows her to see things in true colour: lies flash a different hue in her mind to the tint that words of familial love assume.
The pace was awesome, the characters real, the theme a delightful concoction of colours and numbers. Serial killers are always fascinating and super-scary, so this book won't disappoint.
If you've read Color Blind, you already have Double Vision on your bedside table. If you haven't discovered Colby Marshall yet, go buy both.