Mary and Marshall try to help FBI Agent Mike Faber convince his informant to enter WITSEC. Despite their best efforts, the informant refuses their protection and gets himself into a heap of trouble. After Mary, Marshall and Agent Faber save the informant from certain death, he and his family join Witsec.

Mary's new witness is part of a mortgage fraud ring and is an important link in the case of FBI Agent Faber.

After a priest witnesses the murder of a parishioner, he will have to give up his special vocation in order to enter WITSEC.