If you check the latest news on www.animenewsnetwork.com you shall notice that there is no live action DBZ movie, but that someone is planning to make a 39-episode series based on Agatha Christie thrillers. That could be interesting. Aside from Shingetsutan Tsukihime and Demon Detective Loki Ragnarok, I haven't seen a decent detective/investagtive thriller yet. (And please don't mention Detective Conan, I will NOT be convinced into supporting it)