Nolan knows something up when he finds Padma rifling through his desk

She covers herself by saying she was hiding a keychain she bought for him, but slips up when she mentions that she knows Carrion is a computer program. Earlier, Emily advised Nolan to play Padma like she’s been playing him. That’s why he let her find a flash drive that says “Welcome to Carrion” when it’s opened. The trap is set.