Synopsis

The arrival of a champagne bomb throws Constantine and Celeste (Jennifer Beals) into a state of heightened vigilance as they strive to identify the person behind the assassination attempt. Separately, Nate seeks out Grace after an unforeseen incident threatens a powerful mobster's prized racehorse. Back at Roosevelt Medical Center, Grace is asked to treat Jack Hanson (Derrick Trumbly), Brett’s estranged brother, who has suffered devastating injuries in a cycling accident.