'The noises were fuzzy in the darkness. Like hearing a domestic dispute through an apartment wall. As a cop, it was a scenario I'd experienced many times as I'd approached a stranger's front door. But this was different. This time I wasn't going anywhere. I wasn't moving at all. Couldn't move at all.'In May 2009 Napa cop Richard Marsh suffered a severe stroke that submerged him in the terrifying w...