Mello's smile didn't reach his eyes, but he did smile. He should've known S.T. had had a hand in those. He also had a good idea which case study referred to him. Playing around with one's genes was pretty damn specific.

"I don't have them on me. I was going to offer you a look if you hadn't seen them." To solidify their not-exactly-alliance, for one thing, but also because S.T. was coming at the problem from a different angle, and while Mello preferred working alone, he'd also learnt to tell when cooperating would get him what he wanted faster.

"What do you think about the guy who got taken twice?" Either that case didn't belong in the list at all, or it was an anomaly worth knowing more about.