What John Christofferson has said about Murders of Dennis and Merna Koula

3 quotes · 1 episode · May 14, 2026

John Christofferson, Lead investigator, then a Wisconsin Department of Justice special agent assisting the La Crosse County Sheriff's Department, has been quoted on Murders of Dennis and Merna Koula 3 times in 1 episode of 48 Hours, most recently on May 14, 2026. Each quote below is verbatim and links to the moment it was said.

In their words

  • Christofferson believed the killer was lying in wait, prepared to execute the couple.

    “This was somebody that was lying in wait for them, prepared to execute them”

    48 Hours: Desperate Measures (May 14, 2026) · Listen from 2:24

  • Christofferson noted that the dresser drawers were searched bottom-up, which he said is not how real burglars behave.

    “they're indicating that they go to the bottom drawer first, pull it out, shuffle through it, then pull out the next drawer, and so forth, going up”

    48 Hours: Desperate Measures (May 14, 2026) · Listen from 9:12

  • Christofferson argued that Eric never asked for help for his parents during the 911 call.

    “once you take the time to listen to the 911 call, you realize that Eric never asks for help”

    48 Hours: Desperate Measures (May 14, 2026) · Listen from 17:45

Episodes

  • Desperate Measures

    48 Hours · May 14, 2026 · 41 min

    Peter Van Sant reports on the 2010 shooting deaths of Dennis and Merna Koula in Wisconsin and the circumstantial murder case against their son Eric.

Others on Murders of Dennis and Merna Koula

John Christofferson on other topics