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      Authors A–Z: O

      Browse FictionDB authors alphabetically by last name, with book counts, series information, and bibliography links for quick discovery.

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      Letter: O Showing: 51–100 Total authors: 145
      O'Shea, Dan
      Thriller
      Books 3
      Series 1
      O'Sullivan, Brian
      Thriller
      Books 25
      O'Sullivan, Darren
      Thriller
      Books 13
      O'Sullivan, Kathryn
      Mystery
      Books 4
      Series 1
      O'Sullivan, Mike
      Mystery
      Books 21
      O'Sullivan, Ronnie
      Mystery
      Books 5
      Series 1
      Oak, B.B.
      Historical Mystery
      Books 3
      Series 1
      Obey, Erica
      GRSWP
      Books 6
      Obregon, Nicolas
      Police Procedural
      Books 4
      Series 1
      Obrist, Jurg
      Mystery
      Books 5
      Obstfeld, Raymond
      General Fiction
      Books 9
      Ocean, T. Lynn
      Mystery
      Books 8
      Series 1
      Odden, Karen
      Historical Mystery
      Books 6
      Series 2
      Offord, Lenore Glen
      General Fiction
      Books 5
      Series 1
      Ogan, George
      Suspense
      Books 4
      Oglesby, Ernest
      Action Adventure
      Books 6
      Series 1
      Ohlsson, Kristina
      Police Procedural
      Books 10
      Series 1
      Oko, Jennifer
      Mystery
      Books 3
      Olcott, Anthony
      Suspense
      Books 3
      Series 1
      Olden, Marc
      Action Adventure
      Books 37
      Series 4
      Oldham, Nick
      Police Procedural
      Books 40
      Series 3
      Oleksiw, Susan
      Law Enforcement
      Books 14
      Series 3
      Olgin, Howard
      Medical Thriller
      Books 4
      Olin, Sean
      Horror
      Books 4
      Series 1
      Oliphant, B.J.
      Amateur Sleuth
      Books 8
      Series 1
      Oliva, Alexandra
      Science Fiction
      Books 3
      Oliver, Anthony
      Suspense
      Books 4
      Oliver, Ben
      Mystery
      Books 5
      Series 1
      Oliver, Kelly
      Historical Mystery
      Books 28
      Series 5
      Oliver, Lorne
      Mystery
      Books 10
      Series 2
      Oliver, Steve
      Mystery
      Books 4
      Series 1
      Ollerton, Ollie
      Thriller
      Books 3
      Series 1
      Olsen, Gregg
      Thriller
      Books 42
      Series 8
      Olsen, Gregg; Morris, Rebecca
      Mystery
      Books 6
      Series 1
      Olsen, Jack
      General Fiction
      Books 19
      Olsen, Mark Andrew
      Suspense
      Books 4
      Olshaker, Mark
      Suspense
      Books 4
      Olson, John B.
      Suspense
      Books 4
      Olson, Karen E.
      Mystery
      Books 15
      Series 5
      Olson, Neil
      Thriller
      Books 4
      Olson, Paul F.
      Horror
      Books 4
      Olson, Sandra
      Private Investigator
      Books 12
      Series 1
      Omer, Mike
      Police Procedural
      Books 12
      Series 3
      Oram, Susan Specht
      Thriller
      Books 25
      Series 4
      Orchard, Sandra
      Romantic Suspense
      Books 17
      Series 3
      Orde, A.J.
      Amateur Sleuth
      Books 6
      Series 1
      Orenduff, J. Michael
      Thriller
      Books 10
      Series 1
      Orenstein, Frank
      Mystery
      Books 7
      Series 2
      Orford, Margie
      Police Procedural
      Books 9
      Series 1
      Orgain, Diana
      Cozy Mystery
      Books 30
      Series 6