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William Costello

William Costello (credit: Denver Police Department)

Denver Man Accused In Cold Case Rapes Commits Suicide

A Denver District Court judge declared a mistrial in a serial rape case Thursday after the defendant apparently killed himself.

03/06/2014

William Costello (credit: Denver DA)

Man Accused In Cold Case Rapes Faces New Charge

Lynn Kimbrough with the district attorney’s office said William Costello, 47, has been charged with second-degree kidnapping and two counts of sexual assault in connection with an assault that took place in July 2011.

03/01/2013

DNA (credit: CBS)

Denver’s DA Behind The Push For Expanding Criminal DNA Sampling

It’s headed for a tough fight in the Legislature, but the man behind the plan to require anyone convicted of any crime in Colorado to provide a sample of DNA says it would be a great tool for fighting crime.

02/01/2013

An arrest document from the town of Bayfield (credit: CBS)

Suspected Serial Rapist Caught Driving Politician’s Car

CBS4 has learned a man accused of being a serial rapist has ties to at least one high-profile Colorado politician and may have volunteered for the Democratic Party.

11/21/2012

CBS4's Valerie Castro talks with Denver District Attorney Mitch Morrissey (credit: CBS)

Denver D.A. Praises ‘Katie’s Law’ In Arrest Of Serial Rape Suspect

He got into a fight in a grocery store parking lot and now Denver police believe DNA evidence connects that man to three rapes — one involving a 13-year-old girl.

11/20/2012

(credit: ThinkStock)

Police Credit ‘Katie’s Law’ For Alleged Serial Rapist Arrest

A man accused of a series of rapes dating back to 2008 has been formally charged.

11/19/2012