After a man goes to extremes to get justice for his daughter, Gideon and Martinez use new technology to investigate the case. Meanwhile, the assistant state attorney continues to interrogate Gideon and his ideas for the 13th district.

When Murphy and Ada team up to help solve a murder, they discover that the killer's next target is Gideon. After learning his safety's at risk during his company's huge technology convention, they utilize a high-tech scanning system to try and track down the killer.