This is one of those 'stand alone' episodes that may have been written by a spec writer. It is good and very 'X-Files' like which as a fan of that show I don't mind, however the biggest problem with this episode is that it includes a key character, Charlie, who was killed off in a prior episode after Olivia discovers he'd been replaced by a shape shifter and she was forced to shoot him. So this is one of those situations where whoever was in charge of deciding where to stick these 'stand alones' didn't realize it included someone who was already dead. Oops :)
Review of Earthling
