Jeez. Your prejudice — or perhaps unfamiliarity — is showing. The Peruvian criminal justice system is better than most in Latin America. If you read all the stories on this, he was questioned in the presence of a lawyer, a judge and about 15 other people. He was not tortured, no one laid a hand on him. He knows they have him dead to rights, he knows he’s in deep doo-doo, and he is cooperating in the hopes that they will go easier on him if he does. Which I doubt. The methods you describe are, in Latin America, typically used on political prisoners, not run-of-the-mill murdering psychopaths. And nobody expects the Spanish Inquisition. And for a hair-raising preview of the prison he will end up in, see http://2164th.blogspot.com/2010/06/joran-va-ser-sloot-when-convicted-will.html
In that case I am totally disappointed. There are some cases where progress may not really be progress at all. However, I somehow think that Van Snot may not have as easy a time of it.