Parallels is a 2015 American science-fiction adventure film, originally conceived as a television pilot, derived from a story by Christopher Leone and Laura Harkcom. Mark Hapka, Jessica Rothe, Eric Jungmann, and Constance Wu star as people who are thrown into alternate Earths that range from subtly different to post-apocalyptic. It was released in March 2015 on the Netflix streaming service. It was announced on November 16, 2016 that Neil Gaiman would be collaborating with Christopher Leone and Albert Kim to adapt the teaser/trailer film into a TV series, titled "The Building". However, to date no further information about the TV series has been released since 2016 and the project appears to have been cancelled.

Mark Hapka is an American film and television actor who first gained attention for portraying the lead role of the spirit 'Zach' on the Ghost Whisperer spin-off Ghost Whisperer: The Other Side. Hapka is most notable for his previous role as Nathan Horton on the NBC soap opera Days of Our Lives.