Title: The Bat (play)
Content:  The Bat is a three-act play by Mary Roberts Rinehart and Avery Hopwood that was first produced by Lincoln Wagenhals and Collin Kemper in 1920. The story combines elements of mystery and comedy as Cornelia Van Gorder and guests spend a stormy night at her rented summer home, searching for stolen money they believe is hidden in the house, while they are stalked by a masked criminal known as "the Bat". The Bat's identity is revealed at the end of the final act. The play originated as an adaptation of Rinehart's 1908 mystery novel The Circular Staircase. Rinehart and Hopwood altered the story to prepare it for Broadway, including adding the titular antagonist. The connection to the novel led to a legal dispute over film rights with the Selig Polyscope Company, producers of 
Title: The Bat (1926 film)
Content:  The Bat is a 1926 American silent comedy mystery film directed by Roland West and starring Jack Pickford and Louise Fazenda. The film is based on the 1920 Broadway hit play The Bat by Mary Roberts Rinehart and Avery Hopwood, which itself was an adaptation of Rinehart's 1908 mystery novel The Circular Staircase.
Title: Bats (musical)
Content:  Bats is a musical written in 1983 by two Australian writers, Ian Dorricott and Simon Denver. It has been produced numerous times by school groups.
Title: The Bat!
Content:  The Bat! is an email client for the Microsoft Windows operating system, developed by Ritlabs, SRL, a company based in Chişinău, Moldova. There are two versions: a Home version and a Professional version. The Professional version includes a portable module, The Bat Voyager.
Title: The Bat (1959 film)
Content:   The Bat is a 1959 American crime-mystery thriller starring Vincent Price and Agnes Moorehead. It is the fourth film adaptation of the story, which began as a 1908 novel The Circular Staircase by Mary Roberts Rinehart, which she later adapted (with Avery Hopwood) into the 1920 play The Bat. The first film version of the play was the 1926 American silent film The Bat. The film version was adapted by playwright Crane Wilbur, who also directed. The Bat was distributed in 1959 on a double bill with the British Hammer film The Mummy. Now in the public domain, The Bat is available for online download.
Title: Black Bat
Content:  He appeared in Black Bat Detective Mysteries (published by The Berryman Press), a short-lived pulp which saw six issues, all written by Murray Leinster (a pen-name of William Fitzgerald Jenkins), between 1933 and 1934. The character was called Black Bat in the way Simon Templar was called the Saint; unlike the Simon Templar books, however, none of the Black Bat stories ever mentioned the character's real name.
Title: Bat Loves the Night
Content:  Bat Loves the Night is a non-fiction children's picture book written by Nicola Davies, illustrated by Sarah Fox-Davies, and published August 19, 2004 by Candlewick Press.
Title: There's a Bat in Bunk Five
Content:  There’s a Bat in Bunk Five (1980) is a young adult novel written by Paula Danziger.
Title: Bats (film)
Content:  Bats is a 1999 American horror film directed by Louis Morneau, written by John Logan and produced by Bradley Jenkel and Louise Rosner. The film stars Lou Diamond Phillips, Dina Meyer, Bob Gunton and Leon. It was the first film released by Destination Films. A hostile swarm of genetically mutated bats terrorize a local Texas town, and it is up to zoologist Sheila Casper, who teams up with town Sheriff Emmett Kimsey, to exterminate the creatures before they take more lives. The film grossed $10 million against a $5 million budget. The Rotten Tomatoes critical consensus calls it "neither scary nor creepy".
Title: The Bat Whispers
Content:  An early talkie, this film is the second film version of the 1920 hit Broadway play The Bat, written by Mary Roberts Rinehart and Avery Hopwood, based on Roberts 1908 book The Circular Staircase. The first film version of the play, The Bat (1926), was also directed by Roland West. Just as in the play and the first film, people explore an old mansion looking for a hidden treasure while a caped killer picks them off one by one. This film is noted by Bob Kane as one of the inspirations for some elements of the Batman character, which he co-created with Bill Finger. The film was shot in three versions: a 

Question: Who is the author of The Bat?
Answer: Avery Hopwood.
James Avery Hopwood.
Mary Roberts Rinehart.
Mary Rinehart.