The series revolves around Mary Shannon (Mary McCormack), a United States Marshal attached to the federal witness protection program.... More >
The series revolves around Mary Shannon (Mary McCormack), a United States Marshal attached to the federal witness protection program. Shannon must find ways to balance her professional life of protecting witnesses with her "dysfunctional" family life. Her partner Marshall Mann (Fred Weller) assists her in her assignments and serves as the foil for Shannon.
In the series finale, Mary feels torn between a witness and her family, who gather for an unexpected reunion. Elsewhere, big changes occur at the WITSEC office.