A group of robbers kill a security guard who was a former police officer and who, before his death, used the APB app. Meanwhile, Gideon redesigns a feedback chair - previously utilized in the aerospace industry - for use in the investigation room, and Murphy learns that her ex-husband, Assistant State Attorney Scott Murphy, may be watching them.
Elenco: Justin Kirk , Natalie Martinez , Caitlin Stasey , Ernie Hudson , Taylor Handley , Tamberla Perry , Nestor Serrano .