The detective duo are drawn into a digital war when a member of the anonymous hacker group they both once worked with is found dead.
Despite not having jurisdiction, Frank intervenes when diplomatic immunity complicates a child abuse case for Danny and Baez.
A former client contacts Alicia after being charged with a murder connected to a 2009 case; Alicia remembers her early days as a lawyer as she reviews the old case.
Danny looks to her colleagues for help when her boyfriend is arrested and threatened with deportation. Bull represents a German national who is being sued by a museum over possession of a valuable painting.