Sam leaps into FBI Agent Peter Langly, tasked with protecting witness Dana Berrenger from murder at the hands of a vindictive criminal. Because of suspicions that the criminal has an source inside the FBI, Sam improvises his own plan to save Dana, but the danger still persists. Eventually, Sam and Dana realize that the traitor is actually Langly, his own host. Nonetheless, Sam is able to save Dana from both the criminal and from Langly himself.
Teleplay by Deborah Pratt and Donald P. Bellisario. Story by Paul M. Belous & Robert Wolterstorff and Deborah Pratt & Donald P. Bellisario. Directed by Christopher T. Welch