The Police Commissioner is under pressure to solve a murder and offers $100,000 for information leading to an arrest and conviction of the culprit.

To solve this murder case and potentially claim the $100,000 reward offered by the Police Commissioner, several steps can be taken. It's important to note that the specific details and circumstances of the murder case would greatly impact the investigation approach. However, here are some general steps that could be followed:

1. Gather and secure evidence: The first step is to secure the crime scene and ensure that relevant evidence is collected and preserved. This may involve taking photographs, collecting physical evidence such as fingerprints or DNA samples, and documenting any other potential leads.

2. Interview witnesses: Speak to individuals who may have witnessed the crime or have any information related to the incident. Their testimonies can help establish timelines, identify suspects, or provide crucial information that can aid in identifying the culprit.

3. Review surveillance footage: Check for any surveillance cameras in the area that may have recorded the crime or activities around the time of the incident. Analyze the footage to identify potential suspects or any suspicious activities that may provide leads.

4. Analyze the crime scene: Forensic experts can examine physical evidence collected from the crime scene to gather information such as cause of death, weapon used, or any other relevant details. They can also identify any overlooked evidence that may help in identifying the culprit.

5. Coordinate with other departments: Collaborate with forensic specialists, detectives, and other law enforcement agencies to pool resources and expertise. This can help in analyzing evidence, expanding the investigation scope, or identifying potential connections to other ongoing cases.

6. Engage the public: Publicize the reward offered by the Police Commissioner through media channels, social media platforms, or press conferences. Encourage individuals with any information to come forward and provide tips. It's important to properly vet these tips to weed out false or misleading information.

7. Follow up on leads: Thoroughly investigate any leads obtained, whether they come from witnesses, tips provided by the public, or evidence discovered during the investigation. Each lead should be meticulously pursued and evaluated to determine its credibility and relevance.

8. Utilize technological tools: Use modern investigative techniques such as forensic analysis, data mining, or contact tracing to gather additional information about potential suspects, their connections, or their activities before and after the crime. Digital evidence, such as phone records or online activity, can also be crucial in building a solid case.

9. Maintain confidentiality and protect informants: In cases involving high rewards, some individuals may be motivated to provide false information or try to exploit the situation. It is important to establish proper procedures to protect the identity and safety of informants, which will encourage them to come forward with reliable information.

10. Build a strong case: As the investigation progresses, compile all the gathered evidence, testimonials, and relevant information. Analyze the data and develop a strong case against the potential culprit, ensuring that each piece of evidence is properly documented and presented.

11. Make an arrest and facilitate prosecution: Once a viable suspect is identified, apprehend them using appropriate legal procedures. Present the gathered evidence to the prosecution to proceed with a trial and secure a conviction.

It is important to note that these steps provide a general framework for investigation. The specific details and circumstances of the case may require additional or alternative approaches. However, employing thorough investigation techniques, collaboration, and utilizing available resources are essential to solving complex murder cases and claiming rewards.