NEW DELHI: A white Santro car, which had changed ownership several times, an Aadhaar card of a woman sex worker and a wrong phone number were what police had at hands while probing the case of a woman found dead, bound in chains. But these were the slim clues that helped them solve the case in less than 12 hours.The CCTV footage recovered from Block 18 of Tilak Nagar, where the Swiss woman's body was...