Diamonds of Doom

Zak Nine and his alien friend Erro are trapped on the notorious prison planet Alcatraz, but they manage to commandeer a tiny spacecraft in a desperate bid for freedom. After the launch, they follow a mysterious figure into an abandoned diamond mine where a group of other escapees are hiding, only to discover that one of them has betrayed the group to the guards. With the mine pitch-black and guards closing in, Erro's keen sense of smell becomes their only guide to safety.