Santora, a big firm attorney turned writer/TV producer, returns to his big firm days with this thriller, premised on the idea that while law firms have strict rules governing the conduct of white collar workers (attorneys and their assistants), there are fewer rules -- or perhaps fewer reasons to follow the rules -- with respect to support staff. Being older than Santora, and recalling the days of hard-copy "vacation memos," occasionally used by firm "mail people" who wanted to supplement their incomes with a little breaking and entering, I know that Santora's ideas are not all that far-fetched.
Santora turns this premise into a decent, but not inspired, book. He relies too much on "bad guy with heart of gold" cliches to try (somewhat unsuccessfully) to make us care about the characters. SMALL SPOILER: He certainly never explains why a family that turned down a million dollar-plus settlement, on the advice of counsel, and got nothing, would love and adore that attorney, and that really stretched credulity for me.
Writing style is utilitarian, but pretty much as expected from this genre.