This Practice Note explains the purpose and scope of Fatal Accident Inquiries (FAIs) into sudden, suspicious, accidental and unexplained deaths in Scotland under the Inquiries into Fatal Accidents and Sudden Deaths etc (Scotland) Act 2016 (IFASD(S)A 2016). An FAI is a type of court hearing which publicly examines the circumstances of a death in Scotland. It is presided over by a sheriff and will normally be held in a sheriff court. The Practice Note explains the role of the Crown Office and Procurator Fiscal Service (COPFS) and Police Scotland in investigating work related deaths, the Scottish Fatalities Investigations Unit, what is meant by a ‘reportable death’, mandatory and discretionary fatal accident inquiries, the main features of an FAI, the scope and limitations of an FAI and practical considerations for practitioners representing clients at FAIs. In England and Wales, such investigations into unexplained deaths are conducted by coroners during inquests.