When a woman is found murdered in Central Park, evidence points to two frequent park-goers -- a street vendor and tech billionaire.
Riker is critically injured and stranded on a developing planet during a first contact mission.
Vivien gives birth. Tate and Violet attempt to rid the house of some of its ghosts for good.
Abby becomes too fixated to solving the murder of a Naval Scientist, while the rest of the team worries about her. Meanwhile, Tony's newest fling brings trouble.
[Season Finale] Dr. Greene names Dr. Weaver as attending physician and Dr. Lewis for chief resident, but the staff is not pleased with his choices. Jeanie learns that her ex-husband has contracted HIV.