The doubt
That day almost at mid-night, Alex received a call from an unknown number when he was about to sleep. Frowning, he looked at the number and thought who might be calling him at that hour. He didn't pick up, thinking that it might be just a random call, and continued sleeping. But his phone again rang, and the call was from the same number. This time he didn't ignore it and answered, "Hello."
An unusually stuffy male voice sounded from the other end, "Mayor's daughter's life is in danger. Save her."
Startled, Alex jumped off the bed instantly and asked, "Who are you?"
"I am a well-wisher of her. Don't leave her alone if you want to save her."
Knitting his eyebrows tight, Alex asked "Who is trying to harm her?"
"Don't you know? I thought you are smart."
With that, the phone disconnected. Alex shouted impatiently "Hello, hello..."