Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP35006) and 8 other sources
In 1980, 35-year-old Karen Lee Koppel was involved in a tumultuous relationship with Ben Stein, a 67-year-old married man with a significant presence in Chicago's business world and alleged connections to organized crime. Their relationship soured when Koppel reportedly realized Stein had no intention of leaving his wife to marry her. The situation escalated after Koppel became pregnant and was allegedly coerced into having an abortion. Following this, she began making demands for a substantial financial settlement to remain quiet about their affair and other matters. This led Stein to seek assistance from a longtime friend, Richard 'Rick' Simon, who was a Chicago police officer at the time and also worked for Stein's janitorial firm. The purpose of Simon's involvement was to negotiate an amicable resolution with Koppel.

The last time Karen Koppel was seen was on a spring evening in Chicago. She was dressed in a black blouse and grey slacks. Simon met with Koppel at Flapjaw's Saloon, located on North Wabash Avenue. During this meeting, it is reported that Simon, acting on Stein's behalf, offered Koppel $10,000 and the use of an apartment on Lake Shore Drive in exchange for her silence and departure from Stein's life. Accounts state that Koppel left the saloon alone that night. She has not been seen or heard from since that meeting. In the immediate aftermath of her disappearance, there was speculation that she may have been murdered and her body disposed of in Lake Michigan, though no evidence was ever found to support this theory.

The investigation into Karen Koppel's disappearance has remained open for decades, though it is not being actively worked. A grand jury was convened in the early 1980s to investigate the case, but Simon refused to testify. No one has ever been charged in connection with her disappearance, and no individuals have been officially cleared as potential suspects. Simon has publicly stated that he does not believe Koppel was murdered, suggesting instead that she may have started a new life elsewhere under a different identity, possibly due to the emotional distress and humiliation from her relationship with Stein. The case remains a poignant mystery, leaving her family and the community without answers about what truly happened to Karen Lee Koppel after she left the saloon that night.

Last Seen: Apr 26, 1980

Possible Unidentified Matches (7)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

82%Moderate
Jane Doe — Chicago, Illinois - unidentified case UP124858
Jane Doe — Chicago, Illinois
UP124858 • Found Jul 14, 1988
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Sex ✓Female
Age 100%Est. 40–49 vs 35 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 8 years after last seen
Height 84%5'2" vs 5'4"
Weight 84%130 lb vs 110 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
81%Moderate
Jane Doe — Chicago, Illinois
UP124375 • Found Apr 9, 1989
View case
Sex ✓Female
Age 92%Est. 45–50 vs 35 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 9 years after last seen
Height 100%5'5" vs 5'4"
Weight 75%135 lb vs 110 lb
Hair 100%Brown vs Brown
Eyes 60%Hazel vs Brown
78%Possible
Jane Doe — Chicago, Illinois
UP11647 • Found Nov 4, 2005
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Sex ✓Female
Age 100%Est. 60–70 vs 35 when missing
Race 100%White
Location 99%15 mi away, same county
TimingFound 26 years after last seen
Height 100%5'1"–5'3" vs 5'4"
78%Possible
Jane Doe — Chicago, Illinois - unidentified case UP136363
Jane Doe — Chicago, Illinois
UP136363 • Found Nov 16, 2005
View case
Sex ✓Female
Age 100%Est. 60–70 vs 35 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 26 years after last seen
Height 100%5'3" vs 5'4"
Weight 0%196 lb vs 110 lb
Hair 70%Gray vs Brown
Eyes 100%Brown vs Brown
77%Possible
Jane Doe — Chicago, Illinois
UP138168 • Found Apr 19, 2001
View case
Sex ✓Female
Age 100%Est. 30–45 vs 35 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 21 years after last seen
Height 84%5'6" vs 5'4"
Weight 66%139 lb vs 110 lb
76%Possible
Jane Doe — South Bend, Indiana - unidentified case UP782
Jane Doe — South Bend, Indiana
UP782 • Found Dec 29, 1996
View case
Sex ✓Female
Age 100%Est. 21–35 vs 35 when missing
Race 100%White
Location 83%72 mi away
TimingFound 17 years after last seen
Height 68%5'1" vs 5'4"
Weight 100%110 lb vs 110 lb
Hair 100%Brown vs Brown
76%Possible
Jane Doe — Kentucky
UP6710 • Found May 26, 1980
View case
Sex ✓Female
Age 100%Est. 25–40 vs 35
Race 100%White
Location 50%251 mi away
TimingFound 4 weeks after last seen
Height 84%5'2" vs 5'4"
Weight 96%123 lb vs 110 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

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