Venom is a 1981 horror film directed by Piers Haggard and starring Klaus Kinski, Oliver Reed, Nicol Williamson and Sarah Miles.
Klaus Kinski chose to do this movie instead of Raiders of the Lost Ark because the salary was higher. In his autobiography, Kinski Uncut, he also stated that the script for the Spielberg movie was moronically shitty.I took over that at very short notice. Tobe Hooper had been directing it and they had stopped for whatever reason. It hadnt been working. I did see some of his stuff and it didnt look particularly good plus he also had some sort of nervous breakdown or something. So anyway they stopped shooting and offered it to me. Unfortunately I had commitments, I had some commercials to shoot. But anyway I took it over with barely ten days of preparation which shows. It doesnt become my picture, its a bit inbetween... Oliver Reed was scary at first because he was always testing you all the time. Difficult but not as difficult as Klaus Kinski. Because Oliver actually had a sense of humour. I was rather find sic of him he could be tricky but he was quite warm really. He just played games and was rather macho and so on. Klaus Kinski was very cold. The main problem with the film was that the two didnt get on and they fought like cats. Kinski of course is a fabulous film actor and hes good in the part, the part suits him very well. They were both well cast but it was a very unhappy film. I think Klaus was the problem but then Oliver spent half the movie just trying to rub him up, pulling his leg all the way. There were shouting matches because Oliver just wouldnt let up. None of this is about art. All the things that youre trying to concentrate on tend to slip. So it was not a happy period. ........
Source: Wikipedia