Unsolved cases involve teams of investigators who work tirelessly to uncover evidence and leads that may help them solve the case.  They often resort to utilizing all available resources, such as interviewing witnesses and examining evidence, plus forensic science, computer technology and other sophisticated tools, in order to try and pinpoint people of interest in the investigation. Ultimately, all hope for a break in the case, no matter how small it may be, even if it takes months or even years to solve.

Surveillance involves the use of advanced technology such as video cameras, GPS tracking systems, biometric scanners, facial recognition software, and other monitoring devices to document evidence and track and observe suspects. Such technology allows law enforcement to keep an eye on suspects and potentially their activities remotely, often in real time. This practice can sometimes be used to help prevent and mitigate crime, as well as in criminal investigations. Recent developments in wireless technology and the internet of things allow surveillance to become even more pervasive and easier to implement. For example, cars and buildings can now be fitted with cameras, sensors and even drones that can monitor and track movements. Furthermore, surveillance technology can allow a law enforcement agency to tap into phone lines, read emails, or even spy on individuals without the need for a court order or other forms of legal permission. This ability to undertake covert surveillance gives law enforcement a powerful tool in the fight against crime.

Crash reconstruction is the detailed analysis of vehicular collisions in order to determine the exact sequence of events leading up to and during the collision. Reconstruction experts are typically employed by law enforcement or insurance companies to reconstruct the scene and analyze factors such as speed, brake application, tire scuffs, and other physical evidence. Some professionals make use of computer simulations and other sophisticated equipment, while others will simply take their time examining the scene of the crash and conducting interviews of witnesses. In either case, the final report can be used to understand the cause of the crash, identify potential negligence, and in some cases, determine fault.

A background check is a process used by employers, landlords, and other organizations to verify the identities and backgrounds of potential employees, tenants, volunteers, or other individuals. Background checks typically involve searches of public records, databases, and other resources to look for information about an individual's criminal history, financial status, past addresses, and more. The extent of the check depends on the organization and the person being checked, ranging from a simple internet search to a complete credit and criminal background investigation. Organizations typically use background checks to protect their interests and to ensure a safe and trustworthy workplace and living environment.

Cybercrime is a criminal activity that involves the use of computers, computer systems and networks. Cybercrime is a broad term that refers to any criminal activity that involves the use of electronic data and communication systems such as the internet, telephone lines, and wireless networks. Cybercrime can encompass a range of activities, from financial fraud and identity theft to more serious offenses such as intrusions into critical infrastructure, cyber espionage, and cyber terrorism. Depending on the nature of the offense, criminal charges can range from a misdemeanor to a felony, with a wide range of possible penalties. As the prevalence of connected devices and the number of malicious actors increase, so too does the threat posed by cybercrime.