Our series so far at dailyherald.com/more

Part 1

Jon Dennison of South Elgin started using heroin when he was 17. Four years later, he's still trying to beat his addiction.

Part 2

DuPage County Coroner Richard Jorgensen was one of the first to sound the alarm about the rising suburban heroin death toll.

Part 3

Round Lake Park Police Chief George Filenko is leading efforts in Lake County to equip police with an antidote to overdoses.

Part 4

DuPage Metropolitan Enforcement Group Agent Dennk King supervises undercover officers who work to cut off the heroin supply.

Part 5

Diane Overgard leads a parent-focused nonprofit group that works to equip parents with tools to help their kids avoid heroin addiction.

Part 6

Christy Hefner is a middle school health teacher who is seeing a change in the way students learn about drugs and heroin.