I just watched this on 4OD yesterday. Liked the 'Cluedo names' touch (Professor Plummer, Rev. Green, Retired Colonel Coleman (Coleman's Mustard, Col. Mustard, geddit?).
I agree with VivaLaBeaver, I distrust Derren after the Casino episode; he approaches a 'random' bloke on the street and persuades him to go to his bank and withdraw £5k. The guy just happens to have £5k in the bank, just happens to have photo ID, the bank are quite happy to hand over such a large sum of money? I didn't buy it, sorry. I like Derren, he's a great showman and I think some of his smaller tricks are genuine. But a lot of the 'bigger' shows, I refuse to believe he'd leave them to chance. And the casino one which 'went wrong' was obviously just to bring back the suspense element, which is lost if everything always goes the way it's supposed to.