- Crazy Jealous Guy: Alan has shades of this in this episode, since Tin Tin is very charmed by Eddie Houseman.
- Married to the Job: Eddie seems to be hitting it off with Tin-Tin, but as soon as work calls with bad news, he leaves without even saying goodbye. She doesn't take it well.
- Shipper on Deck: Grandma Tracy would very much like to see Alan and Tin-Tin together, and isn't above applying some trickery to make it happen.
- Too Dumb to Live: Eddie Houseman; he is well aware of the dangers of going up the mountain alone, yet he goes anyway. It establishes how desperate he is to see his company stay in business.
Recap / Thunderbirds S 1 E 9 End Of The Road
The One with... Tin Tin's boyfriend.Eddie Houseman, one half of the Gray and Houseman Construction Corp., leaves his giant roadbuilding machine for a well-earned vacation, which he spends with his old flame Tin Tin Kyrano on Tracy Island. This, of couse, fires Alan Tracy with seething jealousy. During the trip, however, Houseman receives a disturbing telephone call - the cutting through which the road his company is builing must travel is not as stable as first thought. If it collapses, the lost time will mean that his company fails on their contract, and will fold as a direct consequence. Heedless of the risk to his own life, Houseman sneaks off in the night with an explosives tractor to attempt to blast the rockface clear of the cutting. He succeeds, but the concussion knocks his craft halfway off the high, narrow road. Unable to move lest the truck overbalance, Houseman's collegues radio for help. International Rescue responds, knowing that allowing Houseman to see them will destroy the cover so essential to their work.