When a womanizing finance executive is found stabbed to death after a night at the opera, Elsbeth suspects an obsessed opera lover was driven to murder because of a ringing cell phone. Meanwhile, Elsbeth, Captain Wagner and Kaya must adjust to changes in the precinct as the consequences of Noonan's wrongdoing continue to loom.

When a billionaire dies in an accident during a space training simulation, Elsbeth suspects a fellow magnate and wannabe astronaut named Neal is responsible. Elsbeth's day is turned upside down when she is reunited with a former colleague.

A murder in the world of finance leads Elsbeth to the company Hepson Capital, where she suspects Peter and Bill Henderson, twins known for their dominance in the hedge fund space.