Desc: In the Line of Duty: Siege at Marion: Directed by Charles Haid. With Ed Begley Jr., Dennis Franz, Tess Harper, Paul Le Mat. F.B.I. agent Bob Bryant is charged with an operation to arrest Adam Swapp and his brother Jonathan, suspects in the bombing of a Mormon Center in Utah. The brothers and their families hold-up on their farm with provisions and enough ammunition to withstand the government's siege. They are devout in their beliefs and purposes and are determined to stand up for their rights.