Season 4 includes 26 episodes of Get smart on 5 DVDs, including the legendary two-part special, "The not-so-great escape," featuring the agents' breakout from a sinister KAOS P.O.W. camp in New Jersey.
Season 5 includes 26 episodes of Get smart on 5 DVDs, including Ironhand, Witness for the execution and the final episode in the series, I am curiously yellow ... and many more.