Title: Cover Up (TV series)
Content:  Cover Up is an American action/adventure television series that aired for one season on CBS from September 22, 1984, to April 6, 1985. Created by Glen A. Larson, the series stars Jennifer O'Neill, Jon-Erik Hexum, Antony Hamilton, and Richard Anderson.
Title: Cover Up (1991 film)
Content:  Cover Up (stylized as Cover-Up) is a 1991 American political thriller film directed by Manny Coto and starring Dolph Lundgren and Louis Gossett Jr.. Coto was hired at the latest stage of pre-production right before filming, after writer / director William Tannen left the project.
Title: Cover Up (1991 film)
Content: Dolph Lundgren as Mike Anderson ; Louis Gossett Jr. as Lou Jackson ; Lisa Berkley as Susan Clifford ; John Finn as Colonel Jeff Cooper ; Gil Kopel as MP #1 ; Howard Rypp as MP #2 ; Ofer Lehavi as MP #3 ; Zadok Zarum as Arab Driver ; Josh Sklar as Boom Operator ; John Saint Ryan as Mini-Bar Man (John Ryan) 
Title: Cover Up (1949 film)
Content:  Cover Up is a 1949 American film noir mystery film directed by Alfred E. Green starring Dennis O'Keefe, William Bendix and Barbara Britton. O'Keefe also co-wrote the screenplay, credited as Jonathan Rix. The murder mystery takes place during the Christmas season.
Title: The Coverup
Content:  The Coverup, previously known as The Thacker Case, is a 2008 crime-thriller film directed by Brian Jun and starring Gabriel Mann and Eliza Dushku.
Title: Cover Up (1949 film)
Content:  According to Madeleine Stowe, guest host of the May 21, 2016, Turner Classic Movies screening of Cover Up, the producer changed the time of the film, feeling the subject was unsuitable for a Christmas setting. Star Dennis O'Keefe, who also co-wrote the script, strongly resisted the change and won. This was the first film produced by O'Keefe's new production company, according to Stowe.
Title: The Cover-Up (The Office)
Content:   The episode was written by Lee Eisenberg and Gene Stupnitsky, their third writing credit of the season after "The Lover" and "Scott's Tots." It was directed by Rainn Wilson, who also portrays Dwight Schrute on the show, marking his television directorial debut. He is the fourth actor of the series to make a directorial debut this season after B. J. Novak, John Krasinski, and Mindy Kaling. Cast members Steve Carell and Paul Lieberstein also directed episodes this season, though they had previously directed for the series. This episode was dedicated to the memory of Larry Einhorn, whose son, Randall Einhorn, has directed 11 previous episodes of the series, served as this episode's consultant and cinematographer, and went on to direct other episodes including the next episode.
Title: Cover Up (TV series)
Content: Jennifer O'Neill as Dani Reynolds ; Jon-Erik Hexum as Mac Harper ; Antony Hamilton as Jack Striker ; Richard Anderson as Henry Towler 
Title: Cover Up (1949 film)
Content: Dennis O'Keefe as Sam Donovan ; William Bendix as Sheriff Larry Best ; Barbara Britton as Anita Weatherby ; Art Baker as Stu Weatherby ; Ann E. Todd as Cathie Weatherby ; Doro Merande as Hilda ; Virginia Christine as Margaret Baker ; Helen Spring as Bessie Weatherby ; Ruth Lee as Mrs. Abbey ; Henry Hall as Mayor ; Russell Armes as Frank Baker ; Dan White as Gabe ; Paul E. Burns as Mr. Abbey ; Emmett Vogan as Blakely ; Jamesson Shade as Editor ; Jack Lee as Addison ; Worden Norton as Undertaker ; George MacDonald as Boy in Movie Theatre 
Title: Cover Up (1991 film)
Content:  dangerous political web. Anderson quickly discovers he can trust no one. Renewing a fiery affair with his ex-Iover Susan Clifford, now the US Embassy press attaché, he soon finds himself confronting an old adversary, CIA boss Lou Jackson. And when his former marine colleague Colonel John Cooper is murdered moments after a secret rendezvous with him, Mike realises he holds the pieces to a deadly plot. In a race against time, Anderson battles to save the lives of thousands of innocent people, in a desperate attempt to prevent a deadly plan to create an international disaster of catastrophic proportions.

Question: Who was the screenwriter for Cover Up?
Answer: Dennis O'Keefe.