May Nan Nhung, a top nuclear physicist, has been doing some dangerous research, and now somebody's trying to kill her. Barker and Ellis face the tough job of keeping her alive and getting her to a meeting of the Nuclear Regulatory Commission where she's set to testify. But May Nan only longs to see her husband one more time because she knows she remains a target. Meanwhile, an injured Ellis is surprised when Rose drops by his apartment as he's getting out of the shower.