law: Code of Criminal Procedure Act, 1973
  
  65.Procedure when service cannot be effected as before provided.-
  If service cannot by the exercise of due
  
  diligence be effected as provided in section 62, section 63 or section 64, the
  
  serving officer shall affix one of the duplicates of the summons to some
  
  conspicuous part of the house or homestead in which the person summoned
  
  ordinarily resides; and thereupon the Court, after making such inquiries as it
  
  thinks fit, may either declare that the summons has been duly served or order
  
  fresh service in such manner as it considers proper.