Dr. Thi Trí, O.D. is devoted to helping people. As an optometrist, she uses her skills to solve eye mysteries and improve people's vision. Business woes and tragic events erode her confidence and mental health. She finds strength in sleuthing when she uses her analytic skill and imagination to help her policeman friend solve peculiar burglary cases. However, she will need all her abilities to solve the murder of a friend at an eyecare industry convention. Can she catch the killer(s) before they slip out of sight?