The contents of the book Police Diaries (Statements, Reports & Investigation) are :- General Introduction, Information in Cognizable Cases, Procedure When Investigation Cannot be Completed in Twenty-Four Hours, Police Officer’s How to Investigate Cognizable Cases, Procedure for Investigation, Examination of Witnesses by Police, Statement to Police not be Signed use of Statements in Evidence, Recording of Confessions and Statements, Diary of Proceedings in Investigation, Report of Police Officer on Completion of Investigation, Subject Index