Prosecuting Evil With Kelly Siegler Returns For Season 3 This October 3rd On Oxygen

The hit Oxygen True Crime series Prosecuting Evil with Kelly Siegler returns for its third season on Saturday, October 3 at 9pm ET/PT with a special two-hour premiere exploring the infamous Texas Seven, who staged the largest prison break in Texas history before embarking on a violent crime spree that culminated in the brutal ambush and killing of Irving police officer Aubrey Hawkins on Christmas Eve.

Produced in part by Wolf Entertainment, Oxygen’s Prosecuting Evil with Kelly Siegler examines some of the most high-profile murder investigations and shocking trials through the expert perspective of veteran prosecutor Kelly Siegler. The nine-episode season explores a mix of Siegler’s own cases and other impactful trials she watched unfold during her career, with each case offering a unique legal focus. In each episode, Kelly shares why these cases were significant and how they helped change laws, shape the judicial landscape, and forge new approaches to investigating and prosecuting crimes.

Following a standout second season, Prosecuting Evil with Kelly Siegler returns with even more gripping cases and the firsthand insight that has made the series a hit with viewers. In 2025, Season 2 was the most-viewed Oxygen original series, averaging just over half a million viewers.

Throughout Season 3, Kelly goes beyond the headlines to break down the legal strategies, arguments, and counterarguments that shaped each case, alongside prosecutors, investigators, and victims’ families. From a deadly Houston traffic stop to the murder of a beloved professor and a chilling serial murder investigation, the new season explores the pivotal moments that brought some of Texas’s most shocking cases to justice.

Don’t miss the Season 3 premiere of Prosecuting Evil with Kelly Siegler on Saturday, October 3 at 9pm ET/PT on Oxygen. Before then, catch up on the first two seasons of the show, now streaming on Fandango.