Jonathan Trestle is a paramedic who's spent the week a few steps behind the angel of death. When he responds to a call about a man sprawled on a downtown sidewalk, Trestle isn't about to lose another victim. CPR revives the man long enough for him to hand Trestle a crumpled piece of paper and say, "Give this to MArtin," before being taken to the hospital. The note is a series of dashes and haphazzard scribbles. Trestle tries to follow up with the...