When does Resident Alien return?

The alien language as seen in the series is actually Esperanto written in an invented right-to-left script. After crash-landing on Earth in a small Colorado town, an extraterrestrial sent to wipe out humanity kills a vacationing physician and takes on his identity. He wrestles with the moral dilemma of his secret mission, while also dealing with the mayor's young son, who can see his true alien appearance.
An alien sent to wipe out humanity kills and takes on the identity of a vacationing physician. He is asked to do an autopsy on the town's doctor, who has died in unknown circumstances. He develops compassion for humanity over time and ends up having to defend them from other extraterrestrial threats.