Cal's ex-wife, an assistant U.S. attorney, hires him to get to the bottom of an arson case in which the victim accuses a childhood friend, who's now a famous TV reporter, of burning down his house. He bases the charge on the word of his 5-year-old son. Meanwhile, Foster and Torres investigate a drive-by shooting tied to a feud between rival rappers.

An FBI agent enlists the Lightman Group in the hunt for a serial rapist. Cal's assignment: infiltrate a prison and befriend a convict whom the suspect appears to be copycatting.