During the course of her birthday (and a dreaded surprise party thrown by her mother), US Marshal Mary Shannon tries to find out how a mob hit-man's son under her protection in the Witness Protection Program became one of the victims in a double homicide. Written by Mark C. Robinson

After witnessing the murder of his mother, and because of his knowledge of his father's drug business, young eight-year-old Lonny, soon to be Leo, must be placed into witness protection. Because of his age, the only option for the lad, is to be placed with another family, the Billups, who's already in the program. A year and a half later, the Billups make it official and legally adopt 'Leo', only to discover that Leo's father is out of prison, and wants his son back. Knowing that this is must be a ploy to bring Leo out of hiding, and into harm's way, Mary does everything in her power to stop it. Jinx, Mary's mother, tries her hand at door-to-door cosmetic sales. Written by Lynne Boris Johnston

Diamond thief, bigamist, and con-artist Teri Ranzino (aka Trudy Wainright, Tenley Bishop, Toni Denard, Tress Stevenson), is put into Witsec after stealing 10 million dollars in raw diamonds from her latest clueless husband/mark, getting arrested by the FBI, agreeing to divulge the whereabouts of 20 million dollars worth of illegal conflict diamonds, and giving up the identities of the men conspiring to sell them. After settling in to her new life, the now-Trenna Morris, find a new rich man to marry, claims she really loves this one, and ropes Mary into being a bridesmaid. When the diamond smuggler, Ngwama Mubutu, sees her picture in the paper, however, happily ever after may not be in her future. Raphael proposes to Mary after being called up to the Majors, with disastrous results. Written by Lynne Boris Johnston

Horst Vanderhoff, who reportedly works for a high-priced contract killer, gets popped by the F.B.I. negotiating a hit. With promises of delivering the boss, Lola, he goes into Witsec. While transporting Horst, Mary and Marshall are ambushed in the middle of nowhere, Marshall is shot, but they manage to force the would-be killers to retreat. Finding an abandoned building, they take cover and prepare to defend themselves when the assassins return at nightfall to finish the job.

After setting her cheating, art thieving husband up for the F.B.I., Marci and Jay Allen (now Arnstein) are placed into WITSEC, because the art smugglers/fugitives Jay worked with, are still at-large. As retaliation for his wife's betrayal, and as part of his deal with the D.O.J., Jay insists on bring his mistress into the program as well. Unfortunately for him, after six months, he tries to turn over a new leaf by getting Mary to re-relocate his mistress, Kay, moments before she shows up drunk at an art show, exposing Jay's secret to his wife. Shortly afterwards, Jay ...

10 years earlier - Following a street basketball game, and free-throw practice, orphaned Scott Worley and his baby brother Chris, witness the execution of one bookie by another, followed by threats of "You know what happens to snitches". Testifying landed them in the program as Marshal Mary Shannon's first protectees. Present day finds Scott owning an auto-repair business, and young Chris as a rising basketball star in college. Mary soon discovers that Chris has developed a serious gambling problem and is in thirty-thousand deep with his bookie. Unable to pay the debt...

When teenager Iris McBride witnesses her boyfriend, Lawrence, being shot by a member of a violent Hispanic gang, she and her family must enter WITSEC to prevent retaliation for her planned ID and testimony. Iris's arrogant father, Dr. McBride, now Dr. Morris, goes ballistic, refusing to accept his forced circumstance, making life difficult for his family and the Marshal's alike. Fed up with his new lifestyle that he feels is beneath him, he tries to make his wife choose him, and their old life, over his daughter. Overhearing her Father's plan to leave the program, ...

Donald Ferguson, who's under Mary's watch, dies in a suspicious car accident and it is up to Mary and Marshall to find out if it was just an accident or if it has something to do with the O'Connor family from his old life when he was known as Donald Fraser. Meanwhile, Brandi continues to flirt with Raphael despite Jinx warning her not to.

Over a year earlier, Mary had a tryst with an ex-cop/witness from Chicago, who is now being accused of murdering a cop in Albuquerque...also a former officer from Chicago. Mary and Marshall work to prove his innocence.

Two witness protectees, Tasha and Sergei, in the program for two unrelated cases, meet accidentally through a dating service, and discover each others' secret when Tasha catches Mary and Marshall at Sergei's house. Tasha and Sergei fight to stay together, until Mary discovers Sergei's enterprising new www.side-line, staring clueless, naked Tasha. Brandi boyfriend, Chuck, arranges a drug-buy for the methamphetamine she has been holding for him, with a man named "Spanky". When Brandi discovers an infant in the hotel bathtub of Spanky's front-team, Russell and Rachel, ...

Mary is abducted leaving a studio where her mother, Jinx, is auditioning for a musical, by blundering drug thugs who think she is Brandi, who really has stolen their drugs... twenty pounds of pure Meth. Brandi's New Jersey boyfriend, Chuck, is abducted by the thugs as well, after the drug dealers shoot and kill two F.B.I. agents in Chucks home, who had arrested him, and arranged to place him into WITSEC for his testimony about the drug ring. With precious few clues to go on, the Albuquerque P.D., the F.B.I., and the Inspectors for WITSEC forge a joint task-force to ...

The family regroups after Mary's ordeal; Marshall & Stan deal with Spanky.