Smith and Don are sent to prison.
I remember this episode for two reasons: this hour was experimenting with a "Planet Of The Apes" mask (the first Apes movie appeared in 1968) and the Robot gets some of his most amusing moments of the series.
The footage of the Robot baking a cake, then delivering it to the prison, puts a smile on my face as I type this review. I am not normally the reviewer to get so thrilled by LIS silliness but this footage just got to me. I love it.
Fugitives In Space might not be one of my favourite LIS episodes but it has enough funny moments to hold the viewer.
The prison costumes first appeared in The Time Tunnel episode titled: Devil's Island.