Title: Time After Time (Jake Mathews album)
Content:  Time After Time is the second studio album by Canadian country music singer-songwriter Jake Mathews. It was released on June 8, 2004 by Open Road Recordings.
Title: Time After Time (Elliot Minor song)
Content:  "Time After Time" is a single from the rock band Elliot Minor. It combines traditional pop rock with classical instruments such as the piano. It is Elliot Minor's fifth overall single and comes from their self-titled debut album. The song debuted at 47 on the UK Charts on 5 July 2008. It dropped out of the top 100 the week after. The music was written by Alex Davies, and the lyrics by Alex and Ed Minton. The song was written during the time that the band was trying to get signed. They sent out hundreds of demos and heard nothing back, and the song was born out of their feelings of frustration and being trapped doing the same thing over and over again.
Title: Time After Time (Appel novel)
Content:  Time After Time is a novel by Allen Appel, first published in 1985 by Carroll & Graf. It launched the Alex Balfour series of time travel novels, which the author usually refers to as the "Pastmaster" series.
Title: Time After Time (TV series)
Content:  Time After Time is an American period drama/science fiction television series that aired on ABC from March 5 to March 26, 2017. The series, developed by Kevin Williamson, is based on the 1979 novel of the same name by Karl Alexander and was commissioned on May 12, 2016. ABC removed the series from its schedule after broadcasting five episodes. However, all 12 episodes have been broadcast in Spain, Portugal, South Africa and Australia. In addition, as of February 2019, all 12 episodes can be viewed streaming on CW Seed.
Title: Time After Time (Cyndi Lauper song)
Content:  Written by Cyndi Lauper and Rob Hyman and produced by Rick Chertoff, "Time After Time" is built over simple keyboard-synth chords, bright, jangly guitars, clock ticking percussion, and elastic bassline. Lyrically, the track is a love song of devotion. Pam Avoledo of Blogcritics speculates that, "In 'Time After Time,' Lauper believes she is a difficult person, unworthy of love. She runs away and shuts people out. However, her devoted boyfriend who loves her unconditionally is willing to help her through anything. The relationship is given depth. The couple’s intimacy and history is apparent. They've been together for a long time. They love and have seen each other through every tough part of their life." "Time After Time" is written in the key of C major with a tempo of 130 beats per minute in common time. Lauper's vocals span from G3 to C5 in the song.
Title: Time After Time (1947 song)
Content:  "Time After Time" is a romantic jazz standard with lyrics written by Sammy Cahn and music by Jule Styne in 1946.
Title: Time After Time (1979 film)
Content:  Time After Time is a 1979 American science fiction film directed by screenwriter Nicholas Meyer and starring Malcolm McDowell, David Warner, and Mary Steenburgen. Filmed in Panavision, it was the directing debut of Meyer, whose screenplay is based on the premise from Karl Alexander's novel Time After Time (which was unfinished at the time) and a story by Alexander and Steve Hayes. The film presents a story in which British author H. G. Wells uses his time machine to pursue Jack the Ripper into the 20th century.
Title: Time After Time (The Beloved song)
Content:  "Time After Time" is a 1990 song by British electronic music group The Beloved, released as the fifth and last single from their second album, Happiness. It peaked at number 46 on the UK Singles Chart. A music video was also made to accompany the song.
Title: Time After Time (Eva Cassidy album)
Content:  Time After Time is a studio album by the American singer Eva Cassidy, released in 2000, four years after her death in 1996.
Title: Time After Time (1986 film)
Content:  Time After Time is a 1986 British-Australian television comedy film that was broadcast as episode 3 of the second series of BBC's Screen Two. It was directed by Bill Hays and adapted from the Molly Keane novel by Andrew Davies. It features John Gielgud, Googie Withers, Helen Cherry, Ursula Howells, and Trevor Howard.

Question: Who is the author of Time After Time?
Answer: Allen Appel.