<Li> This season was filmed from August 2009 to April 2010 . </Li> <Li> Season 1 consisted of 20 episodes . </Li> <Li> Kendall Schmidt, James Maslow, Carlos Pena Jr., Logan Henderson, and Stephen Kramer Glickman were present for all episodes . </Li> <Li> Ciara Bravo was absent for one episode, 1x16 Big Time Sparks . </Li>

Big time rush what episode does jo come back