The Glass Passenger is the second studio album by American rock band Jack's Mannequin. Frontman Andrew McMahon was diagnosed with acute lymphoblastic leukemia in mid-2005 following the recording of their debut album Everything in Transit. While touring, McMahon suffered from writer's block, which did not dissipate until mid-2006; many of the songs that would appear on The Glass Passenger were written mid-to-late 2007. Further writing sessions were held when a number of the dates were cancelled due to McMahon suffering from exhaustion and fatigue. The Glass Passenger was produced by McMahon and Jim Wirt and co-produced by CJ Eiriksson; the tracking marked the first time McMahon worked with the band in the studio.