Just one day after after the Iowa Division of Criminal Investigation (DCI) announced the arrest of a suspect in the June 2004 death of Bonnie Callahan, 73, of Keokuk, Iowa, the DCI announced that a Waterloo man was being charged with the 1981 murder of Pamela McCall in Tennessee and two 1992 homicides in Wyoming.

Clark Perry Baldwin

Clark Perry Baldwin (Courtesy photo Black Hawk County Jail)

On May 6, 2020, the DCI assisted the Federal Bureau of Investigation, the Wyoming Department of Criminal Investigation and the Tennessee 22nd Judicial District Attorney’s Office with the arrest of Clark Perry Baldwin (DOB 8-22-61) of 209 W. 5th Street #612, Waterloo, Iowa.

Baldwin, 58, is charged with two counts of murder in the 1991 Tennessee killing of 32-year-old Pamela Rose McCall and her unborn fetus.

He’s also charged in the deaths of two women whose bodies were found in 1992 roughly 400 miles apart in Wyoming. The women, who were never identified, are referred to as “Bitter Creek Betty” and “I-90 Jane Doe.”

Federal authorities used forensic genealogy — the practice of using genetic information in online databases — and looked at similar cases, which eventually led them to Baldwin, said Brent Cooper, attorney general of the 22nd Judicial District in Tennessee.

Baldwin was taken into custody Wednesday, May 6, at his Waterloo home after investigators linked his DNA with semen and other materials recovered from the victims.

Baldwin worked as an over-the-road truck driver for most of his career, living in Nashua and Waterloo, Iowa, and Springfield, Missouri.

Though the suspected serial killer is being questioned in multiple unsolved murders across several states, authorities in Illinois say Baldwin “does not appear to have been involved” in the unsolved 1992 slaying of Iowa college student Tammy Zywicki.

This is an ongoing, multi-state and federal investigation, and updates will be posted on the Iowa Cold Cases “News” page as more details come to light.

Here’s what we know about Clark Perry Baldwin — courtesy the Des Moines Register.

We Remember: Upcoming Cold Case Anniversaries

We remember upcoming cold case anniversaries and birthdays the victims would have celebrated.

Norman Gant Norman C. Gant Jr.
21 YOA
1800 block Tremont St.
Cedar Falls, IA
Black Hawk County
June 1, 2014
Alicia Hummel Alicia M. Hummel
29 YOA
From Sioux City, Iowa
Body found in Missouri River, Clay County, SD
June 1, 2015
Erin Pospisil Erin Kay Pospisil
Age at Report: 15
Missing From:
Cedar Rapids, IA
Case # 200111725
June 3, 2001
Mikaela Bond Hill
22 YOA
717 Hope Ave.
Waterloo, Iowa
Black Hawk County
June 3, 2017
timothy-friedel-article-165px Timothy Friedel
25 YOA
Wooded Area NW
Des Moines, IA
Polk County
June 6, 1974
st-irenaeus-cemetery-165px Steven F. Barrette
20 YOA
Mississippi River
Clinton, IA
Clinton County
June 6, 1976
Cainnan Gates
Cainnan Gates III
34 YOA
1000 blk W. 8th St.
Davenport, Iowa
Scott County
June 7, 2017
Tyrese Parson Tyrese Parson
17 YOA
2223 E. Rose Ave.
Des Moines, Iowa
Polk County
June 8, 2018
Amber Hayes Amber Marie Hayes
7-1/2 months old
603 Clay St.
Muscatine, IA
Case # 88-02703
June 9, 1988

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