Ken Meyer

Hired to prevent the construction of a dam that would imperil a town's water supply, Paladin finds that he sympathizes more with the Irish engineer who's trying to build it.

Chaos ensues on a Western-style planet when Dr. Smith is mistaken for a notorious intergalactic gunslinger named Zeno - at the same time Zeno is hiding out with the Robinsons, disguised as Dr. Smith.