Prosecutors in Kouri Richins’ murder trial couldn’t prove how she poisoned her husband. They didn’t need to

By Nicki Brown, CNN (CNN) — During Kouri Richins’ weekslong murder trial, her attorneys repeatedly drove home the crux of their defense – that prosecutors could not prove how the drugs that killed her husband entered his body. Not one of more than 40 witnesses called by the prosecution testified about how Kouri Richins administered