What is the most difficult crime to solve?

Asked by: Jane Cole  |  Last update: April 1, 2026
Score: 4.9/5 (20 votes)

The hardest crimes to solve are typically those with no witnesses, no physical evidence (like DNA), and no clear motive, often involving complex financial fraud, serial killings (especially random ones like the Zodiac Killer), or crimes with high victim/perpetrator anonymity, making murder with no connection arguably the most challenging, but some white-collar crimes are complex due to tangled financial records, while crimes against vulnerable victims are emotionally difficult to prosecute.

What crimes are the hardest to solve?

Burglary is probably the most difficult to solve because its perpetrators do not have a motive that makes the victim's identity relevant. In most cases, they will elect to steal from an unoccupied home or dwelling, which may leave few, if any, witnesses.

What is considered the most serious crime in the world?

Murder. Murder is the most serious crime that can be charged following a homicide. In many jurisdictions, murder may be punished by life in prison or even capital punishment.

What is the hardest crime to prosecute?

Murder, First Degree

The most severe criminal charge that anybody may face is first-degree murder.

What state is #1 in crime?

Alaska often ranks #1 for violent crime rates per capita, followed closely by New Mexico, while Louisiana frequently tops lists for overall danger or homicide rates, though figures vary slightly by source and specific metrics (violent vs. property crime) for 2024/2025 data. 

FBI's Toughest Cases To Solve | The FBI Files

36 related questions found

Which US state is safest?

Vermont, Massachusetts, and New Hampshire consistently rank as the safest states in the U.S., according to recent studies by WalletHub and others, often due to low violent crime rates, strong financial stability, and good road safety, with Maine and Utah also frequently appearing in the top five. These rankings consider multiple factors, including personal safety (crime), financial security (unemployment, poverty), road safety (fatalities), workplace safety, and emergency preparedness. 

Which state is easiest on crime?

Top 10 Safest States in America

  • Idaho. ...
  • Rhode Island. ...
  • Connecticut. ...
  • New Jersey. ...
  • Kentucky. ...
  • Massachusetts. ...
  • West Virginia. ...
  • Iowa. In Iowa, the violent crime rate is 287 per 100,000 residents and the property crime rate is fine at 1,331 per 100,000 residents.

What crime is the most serious?

The descending order of UCR violent crimes are murder and nonnegligent manslaughter, rape, robbery, and aggravated assault, followed by the property crimes of burglary, larceny-theft, and motor vehicle theft. Although arson is also a property crime, the Hierarchy Rule does not apply to the offense of arson.

Does Gen Z like true crime?

Yes, Gen Z loves true crime, with high consumption rates driven by social media (especially TikTok), a desire for control in an uncertain world, and curiosity about human psychology, using platforms like Netflix, YouTube, and podcasts for accessible, bite-sized, or in-depth storytelling. This generation engages with the genre for entertainment, to feel prepared, to gain closure from solved cases, and to explore complex motivations behind crimes, often becoming amateur sleuths online.
 

What are the 8 focused crimes?

"8 focus crimes" typically refers to the Uniform Crime Reporting (UCR) Program's Part I offenses in the U.S. (murder, rape, robbery, assault, burglary, theft, vehicle theft, arson) or, in the Philippines, the Philippine National Police (PNP) list (murder, homicide, physical injury, rape, robbery, theft, carnapping of vehicles/motorcycles). These lists cover serious, frequent crimes that law enforcement tracks closely, though the specific categories differ slightly between systems.
 

What is the greatest crime of all time?

9/11 Investigation. They were the most lethal terrorist attacks in history, taking the lives of 3,000 Americans and international citizens and ultimately leading to far-reaching changes in anti-terror approaches and operations in the U.S. and around the globe.

What is the #1 safest city in the world?

While rankings vary by source, Abu Dhabi is frequently cited as the #1 safest city globally in early 2026 by databases like Numbeo (10th year in a row), while other reports highlight Copenhagen, Zurich, and Tokyo as top contenders, often based on different criteria like digital security, health, or personal safety for travelers. 

Which state is no. 1 in crime?

Alaska often ranks #1 for violent crime rates per capita, followed closely by New Mexico, while Louisiana frequently tops lists for overall danger or homicide rates, though figures vary slightly by source and specific metrics (violent vs. property crime) for 2024/2025 data. 

What is the stupidest court case?

We all know the most famous frivolous lawsuit story. Stella Liebeck sued McDonald's back in 1992 when she spilled hot coffee on herself. "But coffee is meant to be hot" we all cry. Dig a little deeper into the case however and it starts to look less frivolous.

What are the 8 most serious crimes?

There isn't a universally defined list of exactly "8 heinous crimes," but common examples include murder, rape, robbery, aggravated assault, arson, kidnapping, torture, and war crimes/crimes against humanity, often categorized by their extreme violence, impact on human life, or violation of fundamental human rights, encompassing both serious violent and property crimes in domestic contexts (like the FBI's UCR list) and severe international violations. 

What murders were never solved?

Let's start with one of the most publicized unsolved cases, so popular, there's even a website dedicated to tracking this murderer down.

  • The Zodiac Killer. ...
  • The Taman Shud Case. ...
  • The Tara Calico Case. ...
  • The Severed Feet Mystery. ...
  • The Dead Woman Who Named Her Killer. ...
  • The Boy in the Box. ...
  • The Jeanette DePalma Case.

Why can't Gen Z flirt?

Gen Z grew up being online, we have no option but to make social media and the internet an inherent part of us, more than socialising, and so performative affection feels easier and safer than a genuine, direct one.

What is Gen Z obsessed with?

There is evidence that Generation Z is also nostalgic for the 1990s and 2000s, given the popularity of aesthetics such as grunge, Y2K, and Frutiger Aero among this cohort.

What kind of person enjoys true crime?

Women are more prone to enjoy and obsess over true crime than men because they are disproportionately likely to be victims of crime. The driving force behind this obsession is the desire to experience fear in a controlled environment, where we can safely explore unsettling emotions without real danger.

What is the hardest crime to defend?

Crimes that are hardest to prevent often involve crimes of passion, white-collar/financial crimes, human trafficking, and cybercrimes, due to their spontaneous nature, complexity, global reach, or lack of physical evidence, making them difficult to predict and investigate compared to more routine offenses. Crimes like burglary are also challenging because they're often opportunistic, targeting unoccupied locations, and perpetrators use precautions like gloves to avoid leaving evidence. 

Is there ever a perfect crime?

An intentional killing in which the death is never identified as murder is an example of one of the more rigorous definitions of perfect crime. Other criminologists narrow the range to only those crimes that are not detected at all. By definition, it can never be known if such perfect crimes exist.

What are the 11 crimes against humanity?

According to the Rome Statute, there are eleven types of crimes that can be charged as a crime against humanity when "committed as part of a widespread or systematic attack directed against any civilian population": "murder; extermination; enslavement; deportation or forcible transfer of population; imprisonment or ...

What state is #1 in safety?

While rankings vary slightly by source, Vermont, New Hampshire, and Massachusetts consistently rank as the top three safest states in the U.S., according to recent reports from sources like WalletHub and U.S. News, often leading in low crime, financial security, and strong emergency preparedness. Vermont often appears at #1 overall, excelling in neighborhood safety and financial stability, while New Hampshire is frequently cited for its extremely low violent crime rates, and Massachusetts shines in family and health safety metrics.
 

Which state is #1 in crime?

Alaska often ranks #1 for violent crime rates per capita, followed closely by New Mexico, while Louisiana frequently tops lists for overall danger or homicide rates, though figures vary slightly by source and specific metrics (violent vs. property crime) for 2024/2025 data. 

How safe are the USA in 2025?

Crime rates dropped across much of the U.S. in 2025. That was true for both property and violent crime. And it declined nearly everywhere: In big cities and small towns, and in red and blue states.