Agent Ben Reynolds (Mekhi Phifer)Ben Reynolds (Mekhi Phifer) is the FBI agent assigned to assist the Lightman Group with their cases. He and Dr. Cal Lightman, the founder of the Lightman Group, have a rather contentious relationship because they have very different ways of getting information out of a suspect. Ben is not patient and often clashes with Cal when Cal takes his time to question a suspect. Ben has a temper and is not above using physical force with a suspect.The Lightman Group first meets Ben during an investigation into a serial rapist.