A Cold Open, sometimes called Cold Opener, is normally a short scene at the start of the episode before the opening titles, showing a small 20-40 second clip related to the episode. In Malcolm in the Middle, Cold Opens are very different; they are completely irrelevant to the plot with the exception of some 2-parters such as ‘Traffic Jam’, where Malcolm reminds us of what happened in the previous episode and ‘Reese Comes Home’ where we see Hal briefly talk about what happened previously.