Deep Dive (2019)

Chris Knopf's 2019 Sam Acquillo mystery sends the Long Island investigator to Puerto Rico while he works to clear billionaire Burton Lewis of murder. (Open Library)

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Patek Philippe watch: Elton Darby dies while clutching Burton's Patek Philippe, helping police build their initial case against the billionaire attorney.

Source text: Exact wording has not yet been verified from an accessible copy; an edition-level passage is still needed.