Dr. Garret Macy (Miguel Ferrer)
The Chief Medical Examiner, Jordan's boss.

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Macy must deal with Jordan's erratic behavior as well as his confused family (he has a teenage daughter, Abby, but is divorced from his wife) and his own personal demons (Macy is an alcoholic).
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Garret has an affinity for jazz.
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He's been known to have had romantic entanglements with grief counselor Lily Lebowski, ADA Renee Walcott, Charlie Davis, and, obviously, his one-time wife, Maggie Warner.
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Garret has recently admitted to a drinking problem, after finding out his daughter, Abby, had become addicted to heroin upon dropping out of college and becoming involved with a heroin dealer.

Dr. Jordan Cavanaugh (Jill Hennessy) — a medical examiner from Boston who solves crimes during the course of investigations.
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Jordan is emotionally scarred by her mother's murder when she [Jordan] was a child in the 1970s.
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Jordan's issues with trust ensure serious relationships don't have a chance with her except for one she has with Woody Hoyt.
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He is the homicide detective who has stayed true to Jordan for three seasons, giving in to her unorthodox investigating.
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When Woody was shot in the fourth season's finale, Jordan was forced to confess her true feelings.

Crossing Jordan is an American television crime/drama series that aired on NBC from September 24, 2001 to May 16, 2007.

It stars Jill Hennessy as the crime-solving medical examiner, Jordan Cavanaugh.

The show uses an ensemble cast approach featuring a group of Jordan's co-workers, members of the Boston Medical Examiner's Office and police detectives assigned to the various cases.

It was created by Tim Kring. The title refers to the biblical metaphor of the ancient Hebrews crossing the Jordan River, commonly used in spiritual songs to represent death and passage to the afterlife.

During the first two seasons, the series uses a gimmick whereby Jordan and her retired-police-detective father (Ken Howard) role-play the events leading up to that week's murder, which are depicted by showing Jordan playing the part of the victim or suspect in a recreation of the scene.

(The idea being that such role-playing would allow Jordan to figure out the circumstances of the crime, like a profiler.)