SEASON PREMIERE -- PERVERSION OF RELIGION AND POLITICS RESULTS IN DOUBLE HOMICIDE--When Professors Hugh and Louise Murdoch are found shot dead in their apartment, Detectives Briscoe (Jerry Orbach) and Green (Jesse L. Martin) must determine if Hugh Murdoch's controversial work in stem-cell research could have motivated a religious zealot to commit the murders. But it soon becomes apparent that it was Louise Murdoch's volunteer work raising money and awareness for women's issues in the Middle East that attracted the attention of a troubled young man, Greg Landen aka Mousah Salim (guest star Wil Horneff). A.D.A.'s McCoy (Sam Waterston) and Southerlyn (Elisabeth Rohm) are left to grapple with Landen's interpretation of the Muslim religion, which may have led him to take extreme measures to exorcise his own personal demons.