Robert George Dean (died 1989) was an American author of detective fiction. He also worked as a journalist, and as an ambulance driver during World War II.
The last few books Dean wrote, under the pseudonym George Griswold, are spy novels that still have a certain fan following. A character known as Mr. Groode, a shadowy British spymaster, figures in all four novels, but his prominence in the plot varies widely from book to book.
Works Tony Hunter series Murder Makes a Merry Widow (1938) A Murder of Convenience (1938) Murder Through the Looking Glass (1940) A Murder by Marriage (1940) Murder in Mink (1941) Layoff (1942) On Ice (1942) The Body Was Quite Cold (Dutton, 1951) The Case of Joshua Locke (Dutton, 1951) Affair at Lover's Leap (aka Death at Lover's Leap) (Doubleday's Crime Club, 1953)
other Murder Most Opportune Murder on Margin Three Lights Went Out What Gentleman Strangles a Lady The Sutton Place Murders
He also wrote four books under the pseudonym George Griswold:
A Checkmate for the Colonel (1952) A Gambit for Mr. Groode (1953) Red Pawns (1954) The Pinned Man (1954)
Sources http://www.thrillingdetective.com/hunter2.html On Ice (Superior Reprint, 1945)