Riley Fox Murder: Shocking New Details Being Revealed By 20/20

WILMINGTON, IL — ABC News' "20/20" will be airing a new two-hour special on Friday night surrounding the Wilmington murder of 3-year-old Riley Fox.

The 20/20 segment, which airs from 8 to 10 p.m. Central Daylight Time, includes new interviews with Melissa Fox Hodgen, Riley's mother, as well as suburban Chicago attorney Kathleen Zellner, who served as criminal defense attorney for Kevin Fox.

The two-hour special, featuring anchor David Muir, will also include interviews with FBI agents Lori Warren and Jeremy Resar, who are credited with stepping in and solving the case from the Will County Sheriff's Office, which messed up the homicide investigation by targeting Kevin Fox as the killer, even though he was innocent all along.

"The two-hour program reports on how the mystery unraveled, including how authorities mistakenly zeroed in on Riley’s father, Kevin Fox, as the prime suspect, and raises questions about false confessions and mistakes that may have botched the first investigation," according to ABC News Media Relations.

Kevin Fox was initially charged with his daughter's June 2004 murder. Under questioning by Will County detectives, Fox confessed to the crime, but was later exonerated through DNA evidence after attorney Zellner pushed to have a private lab test "inconclusive" saliva samples.

In 2010, imprisoned sex offender Scott Eby confessed and was later convicted of Riley's murder.

The Fox family was ultimately awarded $8 million in a civil rights suit filed against Will County authorities.

According to ABC, "Warren and Resar discuss why they wanted to seek justice for Riley and the true killer’s startling confession, in which he revealed several key clues the initial investigators didn’t pursue."