Caught in the Act is Grand Funk Railroad's second live album and was released in August 1975 by Capitol Records as a double album. It was recorded live on tour in 1975 and features "The Funkettes" – Lorraine Feather and Jana Giglio.
Early pressings of the album (including record-club pressings) simply state the band's name as "Grand Funk" on the front cover and spine, but have the full name on the record labels.
The 2003 re-mastered version of this release has a total time of 79:08, and was squeezed down to one disc. The 2:47 "Introduction" is gone, but "T.N.U.C" and "Gimme Shelter" are lengthened. Audience interaction and applause is shortened throughout to compensate. The missing "Introduction" is included as a hidden track at the end of "Some Kind of Wonderful" on the 2003 re-mastered version of "All the Girls in the World Beware!!!"