Chicago's Most Wanted: Tylenol Terrorist - FOX 35 News Orlando

It is a 30 year old mystery that began with the death of a 12 year old girl. That was the first of seven deaths that were part of the infamous Tylenol poisonings case.

This version of Chicago's Most Wanted looks back at the case, which remains unsolved.

No one has ever been charged with the murders of those seven people from the Chicago suburbs who died after taking the Tylenol capsules which had been laced with cyanide. In 2007 the FBI formed a special task force to reexamine what had become a dormant case. It's now working with several northwest suburban police departments to try and solve the murders.

The deaths were reported in several suburbs over one weekend back in 1982. It was determined that whoever was responsible bought Tylenol from different retailers, then replaced some of the capsules with ones laced with cyanide and then returned the containers to the shelves where they were bought by unsuspecting customers. The case led to all the anti-tampering packaging that we see today.

During the early part of the investigation a man by the name of James William Lewis sent a letter to Johnson and Johnson demanding $1 millions to stop the Tylenol murders. He and his wife were living in New York at the time and he could not be linked to the murders. But he was convicted of extortion and served 13 years in prison. He was released on parole in 1995.

In late January of 2009 the FBI again focused on Lewis, searching his home in Cambridge, Massachusetts.

Reports at the time indicated that Lewis and his wife submitted DNA and fingerprint samples.

But as of this point, the investigation remains open.

Now the FBI hopes as time has gone by, perhaps someone who knew something might be ready and willing to come forward with information about the case and help solve the case and give the families of those seven victims some closure.