India, April 23 -- It was a usual day, a couple left their highly secured posh South Delhi house for their routine morning workout, only to find their daughter dead on return. Investigation revealed she had been raped too. The house had a strong security system but a hidden key loophole helped accused enter and commit the crime on Wednesday morning.

The victim, 22-year old IIT graduate and a civil services aspirant, was allegedly raped and strangled with a mobile charging cable on Wednesday morning by a 23-year old former house help who wanted to avenge his removal from duty two months ago.

Investigation into the case led to more shocking details, including the alleged rape of another woman in Rajasthan's Alwar by the man hours before t...