"way Vince Martin became a serial killer was more by default than anything I think; i'd hired Vince... ...I had hired him just to do a one murder-job, if you like, but it just worked so well we kept it going and going and going... but Vince just really loved playing the role... ...because it was so anti-pretty boy – it was such an 'anti-prettyboy' role – he loved it, and to me the fact that Mr Bad "was" such a pretty boy really worked for it – it was unexpected... and the fact we had several cast members wanting to leave, not being pushed out... ...but we could roll all those stories together. What made us really unpredictable is that you didn't know who was going to die... ...we actually knocked-off some of our regular cast that wanted to leave."