The cold light of the fluorescent lamps cast grayish hues over Terminal D of Otopeni Airport. Officer Andre scanned the crowd with the vigilance born of years of experience. Beside him walked Luna, an imposing German Shepherd with a shiny coat and intelligent eyes. For three years, they had been an unbreakable team. In all that time, Luna had never made a mistake.

Andrei moved his gaze from face to face, watching gestures, movements, reactions. It was a game he knew by heart.

Luna stopped abruptly. Her ears perked up, tail stiffened, and her gaze locked onto a woman pushing a stroller with a baby wrapped in a light blue blanket. The dog’s nostrils flared, sniffing the air with an unusual intensity. Then, without warning, a low and threatening growl rumbled from her throat.