The BEST seasons of Alert: Missing Persons Unit

Every season of Alert: Missing Persons Unit ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Alert: Missing Persons Unit!

LAMPU — the Los Angeles Police Department’s missing person’s unit. When police officer Nikki Parker’s son goes missing, she joins the LAPD’s Missing Person’s Unit to help other people find their loved ones, even as she searches for her own. Six years later, her world is turned upside-down when her ex-husband, Devon Zoellner, shows up with a proof-of-life photo of their missing boy. Or is it?