FILE 645 / 6 November 2025 / 180 MIN / full

Breaking Badder

Mason City, IowaListen

The town

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Static locations; no street basemap. Places and details. OpenFreeMap © OpenMapTiles Data from OpenStreetMap.

We are going to Iowa this week... Mason City, Iowa... in north central Iowa... Cerro Gordo County about 0:04:13

History, in brief

Town note

Known for its musical and masonry heritage and a large collection of Prairie School architecture.

about 0:05:45

1853

The first settlement in the area was around 1853 at the confluence of the Winnebago River and Calamus Creek.

about 0:07:10

1855

The town was called Shibboleth, Masonic Grove and Masonville before Mason City was adopted in 1855, named for a founder's son, Mason Long.

about 0:07:20

Town note

Nicknamed River City because the Winnebago River and Calamus Creek converge there.

about 0:05:19
All 4 history facts

Town note

Known for its musical and masonry heritage and a large collection of Prairie School architecture.

about 0:05:45

1853

The first settlement in the area was around 1853 at the confluence of the Winnebago River and Calamus Creek.

about 0:07:10

1855

The town was called Shibboleth, Masonic Grove and Masonville before Mason City was adopted in 1855, named for a founder's son, Mason Long.

about 0:07:20

Town note

Nicknamed River City because the Winnebago River and Calamus Creek converge there.

about 0:05:19

The figures, as told

Religious

67.6%

about 0:14:07

Who lives here

White 89.5% · Black 2.1% · Asian 1.2% · Hispanic 5.6%

Ethnicity can overlap race.

Crime / national average

Property crime
▲ about one quarter above

about 0:21:26

Violent crime
▼ about half

about 0:21:35

Money

Two-bedroom rent$840
Median household income$56,009
All figures and comparisons, as told in 2025

Population

"27,385"

No direction stated.

As told in 2025 about 0:13:09

Women

"about 51.2%"

No direction stated.

As told in 2025 about 0:13:19

Median age

"42 and a half"

Comparison: "a little higher than the national average". Direction: above.

As told in 2025 about 0:13:27

Married people

"about 52%"

Comparison: "50-50 is the usual". No direction stated.

As told in 2025 about 0:13:32

White residents

"89.5%"

No direction stated.

As told in 2025 about 0:14:00

Black residents

"2.1%"

No direction stated.

As told in 2025 about 0:14:00

Asian residents

"1.2%"

No direction stated.

As told in 2025 about 0:14:00

Hispanic residents

"5.6%"

No direction stated.

As told in 2025 about 0:14:00

Religious residents

"67.6%"

Comparison: "50-50 is the norm". Direction: above.

As told in 2025 about 0:14:07

Top religion

"Lutheran"

No direction stated.

As told in 2025 about 0:14:14

Unemployment

"just below"

Comparison: "the national average". Direction: below.

As told in 2025 about 0:14:33

Median household income

"$56,009"

Comparison: "about $69,000 in the rest of the country". No direction stated.

As told in 2025 about 0:14:45

Average two-bedroom rent

"$840"

Comparison: "$400 less than the national average". Direction: below.

As told in 2025 about 0:15:19

Asking price, 6th Street Southwest

"$50,000"

No direction stated.

As told in 2025 about 0:16:20

Asking price, three-bedroom house

"$124,500"

No direction stated.

As told in 2025 about 0:16:44

Asking price, five-bedroom house

"$605,000"

No direction stated.

As told in 2025 about 0:17:28

Price, 's house at 16th Street Northeast

"$66,000"

No direction stated.

As told in 2025 about 0:53:06

Property crime

"about one quarter above"

Comparison: "the national average". Direction: above.

As told in 2025 about 0:21:26

Violent crime

"about half"

Comparison: "the national average". Direction: below.

As told in 2025 about 0:21:35

The reviews

3.3 / 5 · average of 4

“Ranked the 31st best place to retire in Iowa and 467th best in the United States.”
about 0:07:43

5 stars

“Lived there my whole life; everyone is a little dramatic about the town's flaws; the perfect combination of big city but still local; events all year, not much crime and most people are nice.”
about 0:08:23

3 stars

“A small town that has always been small; the local government seems to want to keep it that way; companies have been shut out; plenty of jobs for the unskilled and fabulous restaurants but almost no shopping.”
about 0:09:17

3 stars

“Born and raised there; as a teenager it is a good place for old people to drive around and do nothing; 55 churches and an art museum, but run-down houses and untrimmed lawns; schools are good.”
about 0:10:27

2 stars

“A lot of crime in this town; the killing is really close.”
about 0:11:33

“Murder, arson, abductions, bestiality, gang killings, meth labs, panty thieves, high utility bills, no jobs, corrupt police, evil judges, extreme weather, vandalism, slumlords, religious freaks, backstabbing busybodies and horrible bland food.”
about 0:12:02

In Iowa

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The story

Mason City, Iowa, is in Cerro Gordo County in the north central part of the state, about two hours from Des Moines, with a population in 1993 of 27,385. He came from Britt, a small town outside the Mason City area, and was a skinny, blonde, freckled boy with big glasses who loved books and was good at mathematics and science. He graduated from high school in 1991 with a scholarship to North Iowa Area Community College and dreamed of becoming a pharmaceutical lawyer. His father, Jim, was a criminal and bank robber.

His best friend since first grade was Tim Cutkomp. They produced several pounds at a time and used two mules, Terry DeGeis, 32, a heavy equipment operator, and Greg Nicholson, a meth user and dealer, to carry the drug back to northeast Iowa. A few runs brought in hundreds of thousands of dollars.

Early in 1993 Mason City police found nearly 150 grams of pure methamphetamine and $5,000 in Nicholson's house. He agreed to cooperate and wear a wire.

Nicholson had moved in with Lori Duncan, 31, a Navy veteran and single mother of two girls in Mason City. Lori knew him as a man in recovery and did not know he was a witness. On July 7, 1993 she bought a 9mm handgun about five miles from her house.

On July 25 Lori's mother, Marge Milbrath, drove past and saw Lori wave. Amber, six, was playing across the street and came home around three for a picnic. All four were forced into a car at gunpoint and driven about ten minutes to a wooded area outside town, where a grave had already been dug.

He came back for the girls and she heard more shots. All four were buried in the same hole, one on top of another. On July 26 Marge noticed the drapes drawn and the cars parked chaotically. She and her husband let themselves in with a key. The house was quiet and untouched, with an unfinished dinner on the table, but Lori, Candy and Amber were gone. A note in Lori's handwriting said that Phyllis had to leave on short notice and would be in touch. Marge reported them missing.

He beat, tortured and shot DeGeis and buried him separately.

A third partner, Dan Cobain, was a confidential informant. On February 7, 1996 police searched the house and seized the lab, chemicals, notes and books, including books on binding and gagging prisoners. Cutkomp agreed to cooperate and wore a wire while they were on pretrial release.

Police used the maps, sonar and dogs. After three days they found Nicholson, Lori, Candy and Amber in one hole, Nicholson on top and the two girls at the bottom. Amber was still in her swimsuit, Candy in her sundress, and a T-shirt was pulled over one girl's face. The adults had been bound, gagged and shot multiple times; each girl had been shot once in the back of the head. Half a mile away they found DeGeis, face down in a shallow grave, beaten, tortured and shot, his skull fragmented.

The remains were withheld from the families until June 2004. Lori and her daughters were buried together in one white casket after a service at their church, with Elvis Presley's "Peace in the Valley" played and a 21-gun salute at the grave.

The defence argued there was no forensic evidence.

His last meal was a large pepperoni pizza, a two-litre bottle of Coke and breadsticks from Pizza Hut, costing $33.11, and his final words were Gerard Manley Hopkins's poem "Heaven-Haven" and a Hail Mary.

The case

Murder of Greg Nicholson, Lori Duncan, Candy Duncan, Amber Duncan and Terry DeGeis

Victims

Greg Nicholson (34). Meth dealer and confidential informant, living with Lori Duncan
Lori Duncan (31). Navy veteran and single mother
Candy Duncan (10). Lori's daughter, a fourth grader at Hoover Elementary School
Amber Duncan (6). Lori's younger daughter
Terry DeGeis (32). Heavy equipment operator and drug courier, ex-boyfriend

Accused and outcomes

As told in the episode, on 6 November 2025.

Accused

Accused

Outcome

Other people

Dan Cobain. Third partner in the meth lab and a confidential informant
David Putzier. Prisoner and hog thief who testified that admitted the killings
Marge Milbrath. Lori Duncan's mother, who found the empty house and reported the family missing
Leslie. Greg Nicholson's ex-wife
Gabatz. Babysitter who found silenced pistol
Pearl. mother
Mark W. Bennett. U.S. District Judge who presided over both trials
Joseph Tobin. spiritual adviser, a cardinal
Mark O'Keefe. priest
Alyssa and Marvia. daughters
Christy. friend who babysat her daughter

The timeline

  1. 1991 graduates from high school and earns a scholarship to North Iowa Area Community College (North Iowa Area Community College)about 0:36:31
  2. after high school His father has him steal and copy a key to a local bank, robs the bank, is caught on a second robbery and imprisonedabout 0:37:40
  3. 1992 and Cutkomp move to Arizona and set up a meth lab in a secluded house south of Tucson (Tucson meth house)about 0:41:15
  4. March 21st, 1993 Nicholson, wearing a wire, meets and records a $3,000 deal for a future meth pickupabout 0:56:00
  5. July 7th, 1993 buys a 9mm handgun about five miles from her houseabout 0:57:23
  6. July 24th, 1993 and borrow a babysitter's car and search for Nicholson, returning about five in the morning (Gabatz house)about 1:00:50
  7. July 25th, 1993 Marge Milbrath sees Lori Duncan wave; Amber comes home from playing around three for the picnic (Lori Duncan house)about 0:30:23
  8. July 25th, 1993 poses as a lost Avon representative, forces Nicholson to make a recantation videotape, the adults are bound and gagged, the girls are told to pack, and all four are driven to a wooded area and shot (Lori Duncan house)about 1:44:04

Last meals

Places and phrases

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Places in the story

Public places are marked on the map.

Heard in this episode