The Jensen Code is a British children's thriller series first broadcast in 1973. 　　When Terry Connor (David Bradley), a 16-year-old visitor to an Outward Bounds Centre sets off with instructor Alex (Tony Wright) to go potholing, he is unprepared for the disturbing day he will face. 　　When, deep underground, Terry drops his torch, Alex heads off to look for it and is gone for hours.... (展開(kāi)全部)