Officers find strange tracts in a man's luggage, and questionable travel movements that arouse suspicions. A woman returning from a year in Guinea tests positive for LSD in her bags. A child's car seat shipped from China shows a worrisome anomaly.

Officers find strange tracts in a man's luggage, and questionable travel movements that arouse suspicions. A woman returning from a year in Guinea tests positive for LSD in her bags. A child's car seat shipped from China shows a worrisome anomaly.