CH-60: Two years ago.

It was a bright sunny day and And it was eleven o'clock in the morning.  In Alex's office, Clara was walking back and forth with anxiously.

No one was allowed inside Alex's highly secure cabin while he was absent.  His cabin should not be opened without scanning his thumb.  But being Alex's girlfriend, Clara was allowed to go to his cabin and handle important files.  She also knew the password of Alex's cabin, and like Alex, scanning her thumb also opened the cabin.

  Because Alex had already made such arrangements.

The last time Alex was with her in that fresher's party.  By the time she met Alex in the corridor, he had told her that he was going to punish Avery for what she did in the party.

The words that Avery had spoken on stage were constantly ringing in her ears.  And Alex had told her that he was going to punish her for those words. But later that day, Clara did not see him personally and she was very upset because he was ignoring her phone calls.