How many episodes were in the first season of the NBC supernatural drama series in which the premier was October 28, 2011 and lasted until March 31, 2017?
22
Title: Grimm (TV series)
Passage: Grimm is an American fantasy police procedural drama television series created by Stephen Carpenter and Jim Kouf and produced by Universal Television for NBC.  The series aired from October 28, 2011 to March 31, 2017, for 123 episodes, over six seasons.  The series' narrative follows Portland Homicide detective, Nick Burkhardt (played by David Giuntoli), who discovers he is a "Grimm", the latest in a line of Guardians who are sworn to keep the balance between humanity and mythological creatures, known as Wesen.  The series features a supporting cast, consisting of Russell Hornsby, Bitsie Tulloch, Silas Weir Mitchell, Sasha Roiz, Reggie Lee, Bree Turner and Claire Coffee.
Title: Les Revenants (TV series)
Passage: The Returned (French: Les Revenants ) is a French supernatural drama television series created by Fabrice Gobert, based on the 2004 French film "They Came Back" ("Les Revenants"), directed by Robin Campillo.  The series debuted on 26 November 2012 on Canal+ and completed its first season, consisting of eight episodes, on 17 December.  In 2013, the first season won an International Emmy for Best Drama Series.
Title: Grimm (season 1)
Passage: The first season of the NBC American supernatural drama series "Grimm" premiered on October 28, 2011, and concluded on May 18, 2012.  It consisted of 22 episodes.  The series, created by David Greenwalt, Jim Kouf and Stephen Carpenter, follows the last known descendant of the Grimm line, Nick Burkhardt, as he deals with being a cop, and trying not to expose his secret as a Grimm.
Grimm (season 1) Grimm (TV series)