DENVER (CBS4) – The CBS show “48 Hours” will focus on a disturbing Colorado case this weekend.
Marc O’Leary pleaded guilty in 2011 to raping women in Golden and Westminster and was sentenced to 327.5 years for the rapes, as well as an attempted assault in Aurora. He also faced charges in the state of Washington.READ MORE: Colorado Eviction Defense Program Pushing For Better Protection For Tenants
Investigators said O’Leary planned his attacks, staked out four victims in Colorado, assaulted them repeatedly over several hours and then took methodical steps to make sure no evidence was left behind.
The 48 Hours episode includes interviews with detectives — Stacy Galbraith and Edna Hendershot — who worked on the case and knew O’Leary was continuing to prey on more victims as they conducted their investigation.
“They knew they had somebody out there who was extremely calculating, who was really playing a game of how not to get caught. Taking every piece of evidence and also making sure that he was not committing the crimes in the same area,” said Maureen Maher of 48 Hours.
“He would constantly be going to different cities so that the different municipalities wouldn’t know who had which evidence and wouldn’t be able to connect the dots.”READ MORE: Flood Damage Assessment In Larimer County Begins Saturday Morning As More Rain Moves In
FBI Special Agent Jonny Grusing also is featured on the episode.
FBI Special Agent Jonny Grusing talks to CBS 48 Hours Saturday on KCNC at 9 pm about stopping a serial rapist who attacked women across CO. pic.twitter.com/FrVEK0VPJi
— FBI Denver (@FBIDenver) November 18, 2016
Grusing told 48 Hours he was surprised during the course of the investigation “to see a suspect who was so cunning in not getting caught.”MORE NEWS: Meow Wolf Denver Wants Us To Remember Aug. 3 As Weird Billboards Pop Up
Watch the show on CBS4 at 9 p.m on Saturday.