Editor's Note: You have seen the headlines from stars like Heath Ledger to Michael Jackson, but America's pill problem is growing in places far away from the spotlight. A new study says prescription drug overdoses were up by two thirds, from 1999 to 2006. Today in our original series "Addicted," Carol Costello shows us it can be deadly, not only for the addict, but for the doctor who comes between the addict and his fix.

By Brian Rokus, CNN

Louisville, Kentucky (CNN) – Detective Steve Watts is locking up another accused pain pill addict. But he's seen this suspect before.

She's back in handcuffs for the second time in less than a week. The charge this time, like it was just four days ago, is fraudulently obtaining prescription medication.

For Watts and the other detectives of the Louisville Police Department Prescription Drug Diversion Squad, it will be one of 500 to 600 arrests they make each year.

Even with arrests nearly every day, "We're just scratching the surface," according to Watts. The number of investigations the unit initiates is up 148 percent compared with a year ago.

It can be surprisingly easy to get prescription narcotics that are highly addictive, and they're highly profitable on the street. FULL STORY