When did all this happen? And yeah, I would still have my own guy look at the computer and put everything on disc. Don't believe anything the cops tell you.
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btw, has an accident theory been entirely ruled out?
A possible scenario:
For some reason he gets in his car early that Friday morning and decides to go for a drive. Maybe he's going down to kwikie-mart for some coffee and the morning edition, or perhaps some aspirin for his hangover. About a mile from home he realizes he is too impaired to drive, so he gets out(but not before hurling in his car) and decides to hoof it the rest of the way, figuring a brisk walk will sober him up faster(after all, he has to be at work in a few hours). He gets to the bridge before nausea hits him again, and leans over the bridge railing to vomit. Except he's leaned over a little too far, the sidewalk is icy, his feet slip out from under him, and over he goes. He may have been hurt or stunned in the fall, and the the icy water does the rest. And then his body is slowly swept out to sea.
[Comment: My mother lost an uncle in similar fashion many years ago.]