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Part of the Allen Murder Series
This article is part of a seven-part series exploring the 1880 murder of Hiram P. Allen, the investigation, trial, confession, and eventual pardon that followed.
The complete Allen Murder Series appears at the end of this article.
“Terrible Trial! Now on Docket at Geneva”
The Weekly Argus (Sandwich, Illinois), February 26, 1881
A Case That Captivated Northern Illinois
More than a year after the murder of Hiram P. Allen in Sandwich, the case finally came to trial in Geneva due to a change of venue. Newspapers throughout northern Illinois followed every development. The proceedings filled columns of print each week as witnesses were questioned and detectives described their efforts to solve the crime.
By the time the trial opened, public interest had reached extraordinary levels. Many residents already believed they knew who was responsible, while others questioned whether authorities had arrested the right men.
The State Builds Its Case
Prosecutors attempted to prove that William Thomas had participated in the murder and robbery of Hiram Allen.
The state’s case relied heavily upon:
- Witness testimony
- Statements allegedly made by Thomas
- Circumstantial evidence
- The candle fragment discovered at the Allen home
- Testimony from detectives who had worked undercover
Newspaper accounts suggest that prosecutors believed they had assembled a chain of evidence connecting Thomas to the crime.
The Candle Fragment
One of the most discussed pieces of evidence involved a broken candle.
According to testimony reported during the trial, investigators discovered a fragment of candle at the Allen residence. Detectives later attempted to match it with candles sold by local merchants.
Newspapers repeatedly referenced the candle evidence, making it one of the most famous details of the entire case.
Quote Panel
“Only one candle had been sold in the place for several days, and one-half of a candle was found at Mr. Allen’s, with its broken edge fitting exactly to the fragment of candle left at the store.”
— Trial testimony reported in The Weekly Argus, February 26, 1881
H2 — The Female Detective
Among the most unusual aspects of the case was the role of female detective Cora Munn.
Working undercover, Munn attempted to gain the confidence of suspects and associates connected to the case. Newspaper readers followed her testimony closely, and her appearance in court became one of the trial’s most talked-about moments.
At a time when female detectives were still rare, her involvement attracted considerable attention.
“The female detective was then sworn. She was employed as a detective in the case and sought the acquaintance of Will Thomas by renting a room where he boarded.”
A Packed Courtroom
The trial drew spectators from throughout the region.
Reporters described crowded courtrooms, lengthy testimony, and intense cross examinations. Witnesses included neighbors, merchants, detectives, family members, and individuals who claimed to have heard incriminating statements.
Each day brought new testimony and new newspaper headlines.
Defense attorneys challenged the state’s evidence and questioned the reliability of witness testimony.
They argued that much of the case depended upon assumptions and circumstantial evidence rather than direct proof. Several witnesses were subjected to lengthy cross examinations as the defense attempted to create doubt in the minds of jurors.
Newspapers often characterized the proceedings as a battle between competing versions of events.
“Some Pretty Tall Swearing Done by the Defense in Order to Prove the Boys Innocent.”
Headline, The Weekly Argus, March 5, 1881
Verdict and Aftermath
The jury ultimately found William Thomas guilty.
Yet the controversy did not end with the verdict. Questions about the evidence continued to linger. Years later, new developments, including the confession of James Young and growing public support for clemency would reopen debate about whether justice had truly been served.
Those developments would eventually lead to one of the most remarkable chapters in the story: Thomas’s pardon in 1888.
Facts at a Glance
| Item | Details |
| Trial Location | Geneva, Illinois |
| Trial Period | February and March 1881 |
| Victim | Hiram P. Allen |
| Principal Defendant | William Thomas |
| Notable Witness | Cora Munn |
| Famous Evidence | Candle fragment |
| Outcome | Guilty verdict |
| Later Development | Full pardon granted in 1888 |
Allen Murder Series
Start with the main article, then follow the story as it unfolded.
1. The Hiram Allen Murder (Main article)
The complete story of the 1880 murder of Sandwich businessman Hiram P. Allen, the investigation, trial, confession, and eventual pardon that followed.
2. The Morning After: The First Newspaper Account of the Allen Murder!
How local newspapers reported the crime in the days immediately after the murder, before arrests were made and theories began to multiply.
3. Cora Munn: The Female Detective Who Helped Solve the case
The remarkable story of the undercover detective whose investigation helped lead authorities to their suspects.
4. (You are here) Terrible Trial!
Inside the sensational 1881 Geneva trial that captivated northern Illinois and filled newspaper columns for weeks.
5. James Young’s Confession
Years after the conviction, a prison inmate claimed responsibility for the crime, reopening questions about who really killed Hiram Allen.
6. William Thomas Pardoned
After years of petitions, doubts, and new evidence, Governor Oglesby granted William Thomas a full pardon.
7. The Evidence Against William Thomas
A closer look at the testimony, physical evidence, and circumstantial case that convinced a jury to convict Thomas in 1881.