'American Greed' Indeed: CNBC Explores Detroit Schools' Kickbacks

Imprisoned vendor Norman Shy

Vendor Norman Shy was the masterminded behind a Detroit kickback scheme involving 12 school principals and a school administrator.

The school officials signed bogus invoices for Shy for $2.7 million in undelivered school supplies from 2009-14.  In turn, he paid about $900,000 in kickbacks. 

CNBC features Shy and the school officials in an episode airing Monday at 10 p.m. on, appropriately named "American Greed." 

Shy, 75, is serving five years in a medium-security  federal prison in Indiana. Other defendants drew at least one year in prison.