The House of the Scorpion
"I knew nothing about it until today," said the doctor.
"You're lying! Tell them, Willum! You thought it was funny. You said the beast - the boy - was in good condition!" (6.33-34)
"You're too young to understand much, and I wouldn't say anything if you were a real boy." Tam Lin tossed bread crumbs into the pool. The little fish rose to the surface to feed. "But you're a clone," he went on. "You haven't got anyone to explain things to you." (7.45)
That was Tom though. He could be courteous and helpful on the surface, but you never knew what was going on underneath. (10.37)