The Wild Wild West 3x4

The agents travel to Hayes City to identify the body of their archnemesis, Dr.Loveless. While there, they meet up with Miguelito's next of kin, Dr.Liebknicht, a Swiss neurologist. However, as they pursue the origin of a key found on the body, they find that Loveless is hardly dead and has plans to use his neurologist guise to give Jim a lobotomy!