American psychologist John Holden arrives in London to participate in a symposium aiming to expose witchcraft and devil-worship as a fraud, with attention centered on a cult run by a Julian Karswell. Debarking his plane, Holden learns that the symposium leader, Henry Harrington, has suddenly died and he is now in charge. What only the audience knows is that Harrington was clearly killed by a demon, apparently summoned by Karswell to avenge his persecution. Despite both threatening and cajoling behavior by Karswell, Holden determines to proceed, though the only cult member willing to talk about his experiences is in a prison psychiatric ward, catatonic after allegedly killing yet another cult member. However, Harrington's niece, Joanna, believes, based on her uncle's notes, that Karswell may indeed have some satanic powers derived from an ancient tome in an obscure language which he has been able to translate, and attempts to warn the skeptic Holden. Karswell's mother also attempts to warn Holden off. However, the thing which begins to most get to Holden are the occasional, but mounting, sensory and mental disturbances he begins experiencing after an encounter with Karswell, and the discovery that, during this encounter, Karswell secretly slipped a slip of parchment with a curse in runic symbols on it into Holden's belongings, a parchment identical to one Harrington recorded having had passed to him in a similar manner shortly before his death... [N.B. Holden at no point stays at the Karswell estate].。每個人總有不為人知的一面,一些隱藏的性格特質或性格缺陷。節目以自私精、控制狂等不同性格特質為主題,每集邀請藝人嘉賓,在他們不知該集主題的情況下參與一些遊戲、考驗或心理測驗,面對諸如買錯早餐、性感女郎「亂入」拍攝現場、拍攝途中意外頻生等種種狀況,並由臨床心理學家張傳義博士(Dr. Amos)觀察及分析他們的行為表現,解讀他們潛藏的心理特質。希望藉著「窺探」內心,能令大家加深了解自己與身邊人。。