looking for a individual television episode

Hi, I have been looking for a individual television episode of the FBI story
starring, Efrem Zimbalist Jr. is titled “How to Murder an Iron Horse”
I have been looking everywhere will be out success.I am hoping that there may be a member of this list, who may have a spare copy of this episode, who could sell me yet, either on DVD/video PAL or NTSC would be fine. I live in Sydney Australia,


Regards,

Bob Hoswell