 Rachel and Bailey respond to the growing list of isolated elderly men and women who are strangled while riding the rails in the Southwest, and Rachel notes cigarette burns that indicate the young killer must have been a victim of abuse as well. While the killer eyes his next targets, the VCTF theorizes that the dead victims must be surrogates for an angry drifter who feels rejected by society and taking it out on other derelicts. Meanwhile, Rachel begins to suspect George s painkiller addiction due to his increasingly erratic behavior while Bailey quarrels with the by-the-book Arizona Sheriff Cunningham over their investigation.