Abstract: Arson cases pose significant challenges to fire investigators due to the deliberate use of accelerants, which are substances that promote and expedite the spread of fire. This research paper presents an analysis of various accelerants commonly found in arson cases and explores their implications for fire investigation. The study involved a comprehensive review of existing literature, case studies, and experimental analysis of accelerant samples collected from real arson incidents. The research aims to provide a deeper understanding of the characteristics, detection methods, and forensic significance of accelerants. The analysis includes a wide range of accelerants, such as gasoline, kerosene, alcohols, and other flammable liquids commonly utilized in arson incidents. Factors affecting the selection, application, and identification of accelerants are examined, including their volatility, residue patterns, and the influence of environmental conditions. Key findings reveal the importance of accurate and timely identification of accelerants in arson investigations. The study highlights the significance of forensic techniques like gas chromatography-mass spectrometry (GC-MS) and Fourier-transform infrared spectroscopy (FTIR) in identifying and analysing accelerant residues. Moreover, the paper emphasizes the crucial role of collaboration between fire investigators, forensic experts, and law enforcement agencies to effectively interpret and present the findings in a court of law.