The Mad Gasser of Mattoon — The Phantom Attacker — Paranormal History

Who Was the Mad Gasser?

The Mad Gasser of Mattoon terrorized the town of Mattoon, Illinois, in the fall of 1944. Over 35 people reported being attacked by a shadowy figure who sprayed a sweet-smelling, noxious gas into their homes through open windows and doors. The victims experienced symptoms ranging from nausea and vomiting to temporary paralysis and blindness, and the attacks created a wave of fear and hysteria that gripped the community for weeks. Despite an extensive investigation by local police and the FBI, the identity of the gasserman was never established, and the case remains one of America’s most puzzling serial attacks.

The Mattoon gassings occurred during a period of intense anxiety in the United States, as the country was still embroiled in World War II and fears of sabotage and enemy attack were widespread. Some residents believed the gasserman was a Nazi agent or a saboteur, while others dismissed the attacks as mass hysteria or a series of pranks gone wrong. The truth remains unknown, and the Mad Gasser of Mattoon continues to fascinate researchers and the public alike.

History

Mattoon in 1944: A Town on Edge

Mattoon, Illinois, in 1944 was a small, industrial city of approximately 15,000 people located in the east-central part of the state. The town was a typical Midwestern community, with a mix of factories, farms, and residential neighborhoods. Like many American towns during World War II, Mattoon was affected by the war effort—many of its young men were serving in the military, and the remaining residents were dealing with rationing, food shortages, and the constant anxiety of wartime.

The war had also brought an influx of workers to the area, as factories and military installations in the region expanded to meet the demands of the war effort. This influx of new residents, combined with the existing population, created a sense of tension and unease that would be exacerbated by the attacks of the Mad Gasser.

The First Attacks: September 1944

The first reported attack occurred on the night of September 1, 1944, when a Mattoon resident named Urban Reopke reported being attacked by an unknown figure who sprayed a sweet-smelling gas into his home through an open window. Reopke experienced symptoms of nausea, vomiting, and temporary blindness, and he reported seeing a shadowy figure outside his window before the attack.

Over the following days and weeks, similar attacks were reported by dozens of residents across the city. The attacks followed a consistent pattern: the victim would smell a sweet, cloying odor—often described as resembling apples or flowers—followed by symptoms of illness, including nausea, vomiting, headache, and in some cases, temporary paralysis or blindness. Some victims reported seeing a figure outside their window, often dressed in dark clothing and sometimes wearing a cap or a mask.

The Panic Spreads

By mid-September, the attacks had created a wave of panic in Mattoon. The local newspaper, the Mattoon Journal-Gazette, published daily reports of new attacks, and the story attracted national media attention. Residents began sleeping with their windows closed, and many armed themselves with weapons, hoping to catch the gasserman in the act. The police received hundreds of reports of suspicious activity, and officers were dispatched to patrol the streets at night.

The panic was fueled by the wartime context of the attacks. Many residents believed that the gasserman was a Nazi agent or a saboteur who was using chemical weapons to terrorize the community. This theory was supported by reports that the gas used in the attacks resembled certain types of chemical agents that were known to be used by the German military. However, the FBI and other authorities ultimately dismissed this theory, concluding that the attacks were more likely the work of a local individual with a grudge or a psychological disorder.

The Investigation

The investigation into the Mattoon gassings was one of the largest in the town’s history, involving local police, the Illinois State Police, and the FBI. The authorities conducted extensive interviews with victims and witnesses, searched for physical evidence, and pursued numerous leads. However, they were unable to identify the gasserman or determine the nature of the gas used in the attacks.

The investigation was hampered by the lack of physical evidence. No fingerprints, footprints, or other trace evidence were recovered from the attack sites, and the gas itself dissipated quickly, making it impossible to analyze. The authorities also faced challenges in distinguishing between genuine attacks and false reports, as the wave of panic led to a surge in reports of suspicious activity that were difficult to verify.

“We had over 35 victims, but we had no suspect, no weapon, and no physical evidence. The gas dissipated too quickly to be analyzed, and the gasserman was never seen clearly enough to be identified.” — Mattoon Police Chief, 1944

The Mystery

The Gas: What Was It?

One of the most puzzling aspects of the Mattoon gassings is the identity of the gas used in the attacks. Victims described the odor as sweet, cloying, and reminiscent of apples or flowers, and the symptoms they experienced—nausea, vomiting, headache, and temporary paralysis—were consistent with exposure to a chemical agent. However, the gas dissipated quickly, and no samples were collected for analysis.

Some researchers have speculated that the gas may have been a form of chloropicrin, a chemical compound that was used as a fumigant and had been employed as a chemical weapon during World War I. Chloropicrin produces a sweet, pungent odor and can cause symptoms similar to those reported by the Mattoon victims. However, the theory that the gasserman was using a military-grade chemical agent has been disputed by other researchers, who argue that such chemicals would have been difficult for a civilian to obtain.

The Gasserman: A Real Attacker or Mass Hysteria?

The most contentious aspect of the Mattoon gassings is whether the attacks were carried out by a real person or whether they were the product of mass hysteria. Proponents of the mass hysteria theory argue that the attacks were a case of集体恐慌, fueled by wartime anxiety and sensationalized media coverage. They point out that many of the reported attacks lacked physical evidence and that the symptoms experienced by victims were consistent with anxiety and psychosomatic illness.

However, the fact that multiple, independent victims reported similar symptoms and similar descriptions of the attacker suggests that the attacks were not entirely imagined. The consistency of the accounts, the specific details about the odor and the symptoms, and the fact that the attacks occurred in different locations across the city all suggest that a real person was involved.

Theories: Revenge, Prank, or Psychological Disorder?

Several theories have been proposed to explain the motives of the Mad Gasser. Some researchers have suggested that the attacks were carried out by someone with a personal grudge against one or more of the victims, and that the gas was used as a weapon of harassment or revenge. Others have argued that the gasserman was a prankster who derived satisfaction from the fear and panic that the attacks created.

A third theory suggests that the gasserman may have been suffering from a psychological disorder, such as paranoid schizophrenia or a delusional disorder, which compelled him to carry out the attacks. This theory is supported by the repetitive nature of the attacks and the apparent lack of a clear motive, which are consistent with the behavior of individuals with certain types of mental illness.

The Sudden End

One of the most puzzling aspects of the Mattoon gassings is the way they ended. After weeks of daily attacks, the gasserman simply stopped, and no further incidents were reported. The sudden cessation of the attacks has been interpreted in various ways—as evidence that the attacker was arrested, that he moved to another location, or that the wave of hysteria simply subsided.

The lack of a clear explanation for the end of the attacks has added to the mystery of the Mattoon gassings. If the gasserman was a real person, it is unclear why he stopped attacking. If the attacks were the product of mass hysteria, it is unclear why the hysteria subsided so abruptly.

Evidence and Investigations

The Original Investigation

The original investigation into the Mattoon gassings was conducted by the Mattoon Police Department, with assistance from the Illinois State Police and the FBI. The investigation involved interviews with hundreds of victims and witnesses, searches of attack sites, and an extensive review of physical evidence. Despite these efforts, the authorities were unable to identify the gasserman or determine the nature of the gas used in the attacks.

The investigation was hampered by several factors, including the lack of physical evidence, the difficulty of distinguishing between genuine attacks and false reports, and the wartime context of the case, which created pressure on authorities to provide a quick resolution. The FBI ultimately concluded that the attacks were not the work of a foreign agent or saboteur, and the case was left to local authorities.

“We interviewed dozens of victims and witnesses, but we were never able to identify the gasserman. The gas dissipated too quickly to be analyzed, and the attacker was never seen clearly enough to be identified. It was one of the most frustrating investigations I have ever been involved in.” — FBI Agent, 1944

The Role of the Media

The role of the media in the Mattoon gassings has been the subject of significant analysis and debate. The local newspaper, the Mattoon Journal-Gazette, published daily reports of the attacks, often with sensational headlines and dramatic accounts of the victims’ experiences. The coverage attracted national media attention, and the story was picked up by newspapers and radio stations across the country.

Some researchers have argued that the media coverage played a significant role in amplifying the panic and creating a feedback loop in which new reports of attacks encouraged further reports, which in turn generated more coverage. This dynamic is consistent with the phenomenon of collective behavior, in which the actions and emotions of a group are influenced by media coverage and social interaction.

Modern Reinvestigations

In recent years, the Mattoon gassings have been the subject of renewed interest from researchers and historians. Modern analysis of the available evidence, including the original police reports, victim statements, and media coverage, has provided new insights into the case and its context.

The most comprehensive modern treatment of the subject is Eric Lawson’s 1993 book The Mad Gasser of Mattoon, which examines the attacks in the context of wartime anxiety and collective behavior. Lawson argues that the gassings were likely the product of a combination of factors, including a small number of genuine attacks, a wave of mass hysteria, and sensationalized media coverage that amplified the panic.

What Do You Think?

The Mad Gasser of Mattoon remains one of America’s most puzzling serial attacks. The combination of multiple victims, consistent symptoms, and the complete absence of a suspect or physical evidence has fueled decades of speculation and investigation.

Some believe that the gasserman was a real person who used a chemical agent to terrorize the community, while others argue that the attacks were largely the product of mass hysteria and wartime anxiety. The truth may lie somewhere in between—a small number of genuine attacks that triggered a wave of panic, which was then amplified by media coverage and social interaction.

Whatever the explanation, the Mattoon gassings are a fascinating case study in the psychology of fear and the power of collective behavior. The image of a shadowy figure spraying gas through a window has become a fixture of American folklore, and the mystery of the Mad Gasser continues to captivate and disturb.

Summary

The Mad Gasser of Mattoon attacked over 35 people in Mattoon, Illinois, in 1944
Victims reported being sprayed with a sweet-smelling gas through open windows and doors
Symptoms included nausea, vomiting, headache, and temporary paralysis or blindness
The gasserman was never found, and the case remains unsolved
Bottom line: The Mad Gasser of Mattoon is one of America’s most mysterious serial attacks, a case that blends genuine fear with the power of collective behavior and wartime anxiety