The petitioner is the accused in a prosecution under Section 138 of the Negotiable Instruments Act. The complainant a woman alleged that the cheque was issued by the petitioner for the due discharge of a legally enforceable debt/liability. The petitioner took up a contention even in the reply to the notice of demand that the cheque was not issued for the due discharge of a legally enforceable debt/liability, but, was issued only as a blank signed cheque as security. The trial has commenced. The case has reached the defence stage. When the complainant, PW1 was being cross examined, she was confronted with a document which allegedly was written by her and in which, crucial admissions were allegedly made about the real nature of the transaction between parties. The defacto complainant denied the said latter. At the defence stage, the accused examined DW1 to introduce that document in evidence. The same has been marked subject to proof. That letter was allegedly written by the complainant and