You remember the mustache. It was thick, grey, and looked like it might crawl off Rob Lowe’s face at any second. If you were watching Lifetime in January 2012, you probably witnessed one of the strangest pieces of true-crime media ever produced. We’re talking about the Drew Peterson Untouchable movie, a film that feels less like a prestige drama and more like a fever dream from the suburbs of Illinois.
Honestly, the casting was the first thing that threw everyone off. Rob Lowe? The guy who was basically the poster child for "ageless heartthrob"? He traded his Parks and Recreation charm for a paunchy stomach, a jarring Chicago accent, and a character so smug it made your skin crawl.
But behind the campy makeup and that infamous line—"I'm untouchable, bitch"—lies a story that is genuinely horrific. This wasn't just a TV movie. It was a cultural moment that happened while the real Drew Peterson was sitting in a jail cell, waiting to see if he’d ever walk free again.
What Really Happened in the Drew Peterson Untouchable Movie?
The film doesn't waste much time. It jumps straight into the life of Drew Peterson, a Bolingbrook police sergeant with a penchant for younger women and a terrifying need for control. We see him wooing Stacy Cales (played by Kaley Cuoco), a woman three decades his junior, while he’s still technically married to his third wife, Kathleen Savio.
It’s uncomfortable to watch.
The narrative basically tracks the disintegration of two marriages. First, there’s Kathleen (Cara Buono), who ends up dead in a dry bathtub. At the time, authorities called it an accident. The movie, however, makes it very clear what it thinks happened. Then comes Stacy, who eventually vanishes into thin air in 2007, sparking a media circus that turned Peterson into a household name for all the wrong reasons.
The Accuracy Problem
People always ask: how much of this was real?
Mostly, the beats are there. The film was based on the book Fatal Vows by Joseph Hosey, a reporter who lived and breathed the case.
- The Blue Barrel: The movie shows a suspicious blue container being moved out of the house. In real life, Stacy’s sister, Cassandra Cales, has spent years talking about that same barrel.
- The Media Blitz: Peterson really did go on Larry King Live. He really did joke about a "Win a Date with Drew" contest.
- The Arrest: The movie ends with his 2009 arrest.
What’s wild is that the movie came out before he was actually convicted. Think about that. A major cable network aired a film essentially calling a man a double murderer while he was still awaiting trial. His lawyers were, predictably, livid. They filed a cease-and-desist. They tried to stop the cameras. It didn't work.
Rob Lowe’s Performance: Genius or Just Weird?
Lowe’s take on Peterson is polarizing. Some critics called it a "botox rictus" of a performance. Others thought he nailed the "sociopath-next-door" vibe. He spent months studying the real Peterson’s voice, trying to capture that flat, nasally Midwestern drawl.
There’s a scene where he walks out of the bedroom completely naked in front of his young son just to "teach him a lesson" about knocking. It’s one of those "I can’t believe they filmed this" moments. It establishes his dominance and his total lack of boundaries.
Interestingly, Lowe was filming Parks and Rec around the same time. If you look closely at some Season 4 episodes of the sitcom, his hair looks a little... off. That’s because he was rocking the "Drew Peterson" length.
The Real-Life Fallout After the Credits Rolled
The Drew Peterson Untouchable movie didn't just entertain people; it actually impacted the legal landscape.
Because the case was so high-profile, Illinois passed what people called "Drew's Law." This allowed hearsay evidence from deceased or missing witnesses to be used in court if it could be proven the defendant killed them to keep them quiet. Without that law, prosecutors might never have secured a conviction for the murder of Kathleen Savio.
Peterson eventually got 38 years for Kathleen’s death. Later, he tacked on another 40 years for trying to hire a hitman to kill the prosecutor, James Glasgow, from inside prison.
As for Stacy? She has never been found. To this day, Drew Peterson maintains his innocence regarding her disappearance, claiming she simply ran off with another man. The movie doesn't buy it, and neither does the public.
Why It Still Ranks in True Crime History
Even in 2026, we’re still talking about this movie because it captures a specific era of "Trial by Media." It was tabloid fodder turned into a 90-minute special.
It’s a cautionary tale about the "blue wall of silence." For years, Peterson felt untouchable because he was the law. He had the badge. He knew the system. The movie highlights how dangerous that power becomes when it’s handed to someone with a fragile ego and a dark streak.
How to Navigate the True Story Today
If you’re planning to dive back into the Peterson case, don't just stop at the Lifetime movie. It’s a dramatization, not a documentary.
- Read the Original Reporting: Look up Joseph Hosey’s work. He was the local reporter who stayed on the story when the national media moved on.
- Watch the 2017 Documentary: Drew Peterson: An American Murder Mystery provides a much more factual, less "campy" look at the evidence.
- Support Stacy’s Family: Her sister, Cassandra, still runs social media pages dedicated to finding Stacy. Following these keeps the pressure on and ensures she isn't forgotten.
- Understand the Legal Precedent: Research the "hearsay law" (725 ILCS 5/115-10.6). It’s a fascinating look at how one man’s crimes actually changed the American judicial system.
The "untouchable" sergeant eventually found out that the law catches up to everyone eventually. Even if you have a badge. Even if you have a movie-star chin.