"You... you..." He finally realized what was odd about Hank Clegg...
Hank Clegg's disguise was so good that even he was fooled.
Well, it wouldn't be wrong to say it wasn't a disguise.
Because he had always been this expressionless, always this cold, and always made it impossible for people to guess what he was thinking.
In addition, from the start, he described his leg symptoms, successfully diverting Mason Ross's attention.
He didn't notice what his real problem was.
Until he asked the question - why has your phone number changed?
Because Mason Ross knew very clearly that in his lifetime, he had only changed his phone number once.
That was when he left Interpol, after he started to work alone, in order to make a clean break with the past, he changed his phone number.
But... that was eight years ago.
"You..." Mason Ross, too, became cautious, "What do you think you got hurt for?"