When also has someone retracted a real confession? It seems more likely that the police beat it out of him, then they leaned on this obscure lab to get the resu

When also has someone retracted a real confession? It seems more likely that the police beat it out of him, then they leaned on this obscure lab to get the results they wanted. Or he’s just guilty and somehow thought confessing to multiple murders wasn’t going to effect his life that much.