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William Costello, accused serial rapist, ends his trial by killing himself

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Photos, video and more below.
In November 2012, we told you about the arrest of William Costello, a successful real estate broker with powerful political ties, on accusations of serial rape -- and the next month, he was linked to two more sex assaults.

This week, prosecutors finally began laying out their case against Costello, only to have a mistrial declared -- because Costello had apparently committed suicide. See photos, video and details below.

As we reported, the rape accusations against Costello, 49 -- a broker for Denver's Unique Properties with a reputation as a good father and ties to influential Democrats such as Colorado Governor Dick Lamm -- began with a very different crime.

On June 30, 2012, according to the first in a series of arrest affidavits on view below, a Denver Police rep was called to the King Soopers at 2810 Quebec Street on an assault report. There, the officer learned that an elderly man had been standing near the door collecting signatures for a pro-life petition. When he asked a customer to sign the sheet on his clipboard, the man, later identified as Costello, rejected this entreaty because of his belief in abortion. However, Costello is also said to have shouted several obscenities -- and when the petition collector told him he could "still go to heaven," he supposedly became even more exorcised, grabbing the clipboard in order to throw it to the ground and pushing him off his bike.

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The King Soopers where the assault allegedly took place.
The fall broke the man's hip.

At that point, Costello fled the scene -- but a witness eyeballed his license plate, allowing the cops to track him down. When confronted, Costello is quoted as claiming that while angry words had been exchanged, he'd only grabbed the clipboard to prevent himself from being struck by it and denied that he'd given the man a shove. Instead, he insisted that the man had toppled of his own accord.

The officer didn't buy this explanation and arrested Costello on suspicion of second-degree assault of an at-risk adult.

The bust triggered the collection of a DNA sample -- and when personnel checked it against previously collected data, matches were reportedly found in a three separate cases.

The first incident took place in March 2008 and involved a thirteen-year-old girl who lived at the Denver Children's Home. She told an officer that she'd become upset with the personnel at the facility and had decided to run away. Shortly after reaching the intersection of East 16th Avenue and North Bellaire Street, she was approached by a dark blue, four-door sedan driven by a five-feet-ten-inch, 160 pound white male with short brown hair and blue eyes.

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East 16th Avenue and North Bellaire Street, where the thirteen year old first encountered the suspect.
The man, who wore a black baseball cap, a red T-shirt and green shorts, was accompanied by a two-year-old boy in the back of the vehicle. He told the girl his name was Will, and asked if she wanted to hang out. She agreed and climbed into the vehicle, at which point he began to touch and penetrate her genitals. This went on for five minutes or so, after which the man told her he'd ejaculated.

He then told her he wanted to do it again, and she complied, reportedly because she feared for her safety -- and she had every reason to be afraid. Before he let her go, she said he opened his trunk and pulled out a black, semi-automatic handgun.

Continue to read more about the death of accused serial rapist William Costello, including photos, video and original documents.



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93 comments
A Lisha Kue
A Lisha Kue

Should of killed himself in front of people I know I would have watched happily

John Donohoe
John Donohoe

Who cares ....Joseph Vasquez Eric Bueno Sheri Duran

Patrick Layman
Patrick Layman

You people are horrible. Who ridicules a human, any human who is driven to take one's own life? That said, this rapist asshole sucked at shaving and his eyebrows were separated on a chromosomal and he looked like a sex offender at first glance.

Robert Faller
Robert Faller

His suicide was not an honorable act. A POS should have popped himself in the head before he committed the crimes. Just had to ruin other familys for his own pleasure. Just a waste of a good bullet

Dean Harris
Dean Harris

Well, saves the taxpayers feeding and housing him

Peace Will Win
Peace Will Win

By all means then, re run it so we can all suffer a bit more, thanks!

Gary White
Gary White

he committed one honorable act, if only he'd acted sooner

GuestGuest
GuestGuest

I think it is pretty obvious that a rapist has some deep, significant mental health issues.

I am truly sorry for ALL the women who were violated by Bill Costello, particularly those who were raped, date raped or said "no" and he still persisted. My heart is with you and I hope you find peace knowing that he is no longer breathing your air or taking up tax dollars or making you relive, in court, what heartless acts he committed.

These women were not brutally beaten and left for dead but they were violated and that is awful. They will get their life back. I pray you forgive and live your life. A tormented soul is out of his misery and it's because you came forward.

All the hatred here is still hard to read, as he was someone's son, brother, dad and friend. Their pain is great. He was not just a rapist but he made friends through life, who accepted him in spite of his shortcomings. Rest assured, when they discovered his new secret life, they did not embrace him. His business associates shunned him, too. Life as he knew it, was over.

BUT, for some - he will be sorely missed. His loved ones took him for who he was and understood he wasn't perfect. So, lose your hate and know this was a person who was loved and will be missed.

lovinmexicoforever1
lovinmexicoforever1

I know Bill too.  Haven't seen him in over 20 years but did spend many years knowing him in the past.  While he was very charming, and outgoing..he did not have much respect for women and I wonder what happened to increase that hatred for them enough to commit such horrible crimes.  It's really scary and sad to see this happen.  I'm sad for the victims, his family, and his son.  When I heard about this I wonder, why did he pick that building, what happened to make his so sick.  I don't feel sorry for him at all or his death. 

lovinmexicoforever1
lovinmexicoforever1

I also knew Bill.  Haven't connected with him for over 20 years but, did spend many years knowing him. While he had a charm about him and was very outgoing, he never had much respect for women.  Not sure what happened to make him hate them enough to rape them.  It's a very sad situation and I can't believe this.  His family must be sad and I feel terrible for his son.  I can't say that I'm sad he's dead. 

lovinmexicoforever1
lovinmexicoforever1

I also knew Bill.  Haven't connected with him for over 20 years but, did spend many years knowing him. While he had a charm about him and was very outgoing, he never had much respect for women.  Not sure what happened to make him hate them enough to rape them.  It's a very sad situation and I can't believe this.  His family must be sad and I feel terrible for his son.  I can't say that I'm sad he's dead. 

lovinmexicoforever1
lovinmexicoforever1

I also knew Bill.  Haven't connected with him for over 20 years but, did spend many years with him when we were younger. While he had a charm about him and was very outgoing, he never had much respect for women.  Not sure what happened to make him hate them enough to rape them.  It's a very sad situation and it's shocking.  His family must be sad and I feel terrible for his son.  I can't say that I'm sad for him taking his life.  

username
username

I knew Bill, and what he did was horrible. He deserved to be punished to the full extent of the law. His crimes are perhaps some of the worst imaginable. I believe people who pray on children deserve the worst. However even he was once a child with as much hope and promise as all who read his story. His death is no victory, not for the victim, not for justice, and not even for society. Its just one more crappy. shitty event on top of sad story. The fact that he won't harm another is a good thing, but nobody should be dancing on his grave.

Bill went to school with and was friends with an  ex-politician's son, and handed out leaflets for the democratic party. He was no more well connected than any other person who did the same thing. As for being a successful real estate broker, he was a real estate broker not any big deal.

Lydia Cabrera
Lydia Cabrera

He had a great idea and was successful in his suicide. He is no longer a burden to our society wished more criminals would take his lead.

Bree Miller
Bree Miller

Should have done that before he chose to commit the crimes. Chicken shit

Debi Kennedy
Debi Kennedy

Chicken Shit. But at least we won't have to pay for him.

Robert Faller
Robert Faller

One less worthless p.o.s. that we have to hear about. Good thing he's dead I wouldn't want my tax dollars paying room and board for his monkey ass

Chris Heller
Chris Heller

I knew this guy via business and it goes to show you never know. Clearly he had a secret dark side.

fishingblues
fishingblues topcommenter

If only all perverts, child molesters and sexual predators were courteous enough to off themselves, what a wonderful world it would be.  The only thing better would be if they would kill themselves before instead of after.  

Jen Ant
Jen Ant

His poor son. Strapped in the back while this was happening in the front with a female child. Terrible. Just terrible that these things happen. I feel sorry for the victims and I'm glad he saved us from having to pay for his jail cell.

David Roy
David Roy

I wish more criminals would do this

Linda Rains
Linda Rains

18 felony counts and he was out with an ankle bracelet?!

DontGetScaredNow
DontGetScaredNow

Why does 'Chester' always have close ties to influential democrats? You lib-tards are some seriously sick freaks.....Shooting up schools and touching kids seems to be quite the past-time for you freaks, huh?

Patricia Hynes
Patricia Hynes

Thanks for sharing Ruthie - guess you won't have to court watch this SOB. He sure looks familiar .....

Stephanie Evan
Stephanie Evan

Opportunistic predator. Assaults a kid living in a group home, which means her life probably sucked already, and then this dirtbag assaults her? A thirteen year old? Glad he is dead.

Cassidy Hara
Cassidy Hara

Damn he was so close to my home...no more terrorizing from him anymore at least.

Clint Jahn
Clint Jahn

Because he was wealthy and politically connected.

Esmeralda Barrera
Esmeralda Barrera

Yeay hooray....he Knew he was GUILTY nomatter whom he Knew in Govt.offices, there are alot of Pervert's,EVERYWHERE!!!! they should all do us a Favor & Kill ThemSelves???That would be, the right thing to do,or have the Family of Whom he Raped,Beat them to Death!!!!*-*

GuestGuest
GuestGuest

@username Whoever you are, thanks for the accurate, articulate way of expressing how many of us feel. It could not have been put any better. You said it all.

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