World-renowned behavioral science professor Alec Mercer uses his unique expertise in psychology, body language, emotion and more to help solve difficult, high-stakes cases. With the support of his research assistants, his tech-savvy sister and his ex-wife -- who also happens to be an FBI agent -- and guided by his fierce curiosity about human decision-making, Mercer truly has solving crime down to a science. By asking the right questions, making observations no one else can and studying every scene in new ways, there's no case too tough for his brilliant mind to crack -- except maybe his own mysterious past.