 The first two hours feature reruns of CBS's crime drama procedural series, which over the years have included the four series of the "CSI" franchise, "Criminal Minds", "NCIS", "", "Cold Case", "Flashpoint" (before its move to Ion Television), "The Mentalist", "Blue Bloods" and "FBI", with the final hour featuring a new or encore edition of the CBS News newsmagazine program "48 Hours Mystery", which focuses on true crime stories.Several times a year "48 Hours" will air two-hour specials or consecutive episodes.Beginning in the 2011–2012 season, the block was reduced to two hours from three to make room for "Comedytime Saturday", a one-hour sitcom block, from 8 to 9 p.m. ET/PT.