Katherine Dossel wrote a good review but she has made one mistake. She said that she was dissapointed that they killed Jeff Tracy off. I just want to correct her that they did not kill off Jeff Tracy, it was assumed he was dead but he wasn't. I read in the Wikipedia (Thunderbirds are Go) about Jeff Tracy and this is what it said: "The third and final series eventually included a final story arc focused on Jeff, in which IR discover him to be alive, rather than dead as presumed, but trapped in deep space. Amid a few standard rescues, the next few episodes focused on the Tracy family developing the means to reach and rescue him, culminating in the brothers eventually bringing him home in the 'Zero-XL', a spacecraft assembled around the five main Thunderbirds."