I Cresilda also looked at the pictures of the taxi driver again and again. Like William, she noticed his mole near his temple and the small tattoo on his hand. She was about to call William but her phone suddenly rings. It is William. “Hello William, I was about to call you.” “Have you seen the pictures Cresilda?” “Yes. Did you notice too, the mole near his temple and his tattoo on his hand?” “Yes, yes. That’s a good lead, don’t you think so?” William’s voice is evidently excited. “Of course, that would be a good start to search for the culprit William. First, we need to inform our agent assigned in that old hotel to observe who among the staff of the hotel has that mole and tattoo. I have a feeling William that the serial killer is not really a taxi driver but