Weeds

I really like the show Weeds which is on Showtime.  I don't get Showtime so I watch it on DVD when it comes out.  I just got disc 2 and 3 of Season 3.  I already watched disc 2, or so I thought I did.  There were two more episodes on there!  I totally missed them.  This show builds on each episode.  Now I am reading the plot lines of the two episodes on Wikipedia.  I was watching the "previously on" and I was like when the heck did all this happen.  I thought I had the wrong disc.  Nope, didn't watch episodes 4 and 5.