Like some other reviewers on this page, I saw the film version of THE CAPONE INVESTMENT rather than the TV miniseries. I imagine some crucial material was cut out in order to condense this into a two-hour slot, but given that even the film version is sometimes slow in places, I'm not too worried.
This is a '70s production about the hunt for a missing wad of cash with links to old-time gangster Al Capone. Various interested parties are interested in the money, and a series of brutal murders reveals that some of them are willing to do just about anything to get their hands on it. The story is presided over by Glyn Owen and Peter Sallis as a couple of officials chasing after the mysterious villains of the piece, with John Thaw in a star-making turn as the belligerent suspect determined to find the murderer himself.
This is a low budget affair that nonetheless provides adequate viewing material for those who don't mind their productions dated and with some awful back-screen effects in places. It's quite a talky piece but it has some fitfully suspenseful moments and the end in particular is quite well staged. The actors all do solid work and are easy to commend too.