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ABC15's Impostors series takes viewers inside the underground world of unlicensed healthcare in Arizona. The six-part series exposes how a regulatory system lets an unthinkable number of medical impostors continue to practice.

Watch the series and take a look at ABC15's continued impostors coverage below:

Click below to watch each episode:
Impostor series - Episode 1
Impostor series - Episode 2
Impostor series - Episode 3
Impostor series - Episode 4
Impostor series - Episode 5
Impostor series - Episode 6