Ramon De Ocampo

Ripley and Frost uncover shocking information that conflicts with their patient's DNR. Hannah facilitates an unexpected reunion.

Louise and Hugh Murdoch, both well-respected professors at Stuyvesant College, are found shot to death in their apartment. The murder weapon, a Beretta 9 mm, is recovered in a nearby trashcan. Detectives Briscoe (Jerry Orbach) and Green (Jesse L. Martin) begin their investigation at the unfortunate couple's offices. Hugh Murdoch was a biomedical researcher who was involved in a controversial type of stem cell research. Initially they think some pro-life groups might have been behind it, but they realize that's not the case.

Josh is caught off guard when political commentators are critical of Leo as a running mate for Santos. White House Counsel Oliver Babish (recurring guest star Oliver Platt - "A Time to Kill") discusses a leak investigation with C.J. And Donna approaches Josh for a job.

A young mathematician is shot with a 200-year-old bullet, inspiring wild theories by Castle about a time-traveling murderer.

As a grand jury convenes to investigate the White House military shuttle leak, the campaign's focus changes to national security. Vinick deftly handles the issue while Santos is bound by his party loyalty to align himself with the Bartlet administration.