Brian Walshe admitted to improper conveyance of a body and misleading the police, but denies killing his wife. His Google searches are key evidence, but do they show premeditation? Laura Coates and Jean Casarez break down the trial so far.

Brian Walshe was found guilty of first-degree murder by a jury of his peers. But the prosecution's win was hard-won, with lingering questions still remaining. CNN's Laura Coates and Jean Casarez examine the prosecution's strategy.