Fourth studio album by the American rock band, originally released in October 2013. Recorded as a trio, the album was produced by Butch Walker, and is the only album to feature bassist Dallon Weekes since he officially joined the band in 2010. This was also the final album to feature drummer Spencer Smith, thus making this Panic!' s final album as a rock band, with further releases being made as a solo project fronted by Brendon Urie.