The trial was over the moment the prosecution had him put on the bloody glove, only for it to be far too small. After that it no longer mattered whether he was actually innocent or guilty, or whether a second glove of the exact same brand, style, and size as stated by the tag fit like, well, a glove - the entire world saw that the glove that the murderer wore soaked in the victims’ blood didn’t fit. The prosecution themselves provided all the reasonable doubt the defense would ever need.
I have no doubt he was guilty as sin - but they could never convict him after that.