This feature film combines the only two episodes ever filmed from the fourth season of Danger Man. Unlike the previous shows these ones were in colour and the production values are pretty good. The problem was that Patrick McGoohan was tired of the series and left the show just two episodes into the new season. The production company tried to salvage something from this disastrous situation and made this feature film from the two episodes. On the basis of this it seems obvious that Danger Man was going in the direction of the James Bond franchise, which no doubt displeased McGoohan who was certainly no fan of the 007 series. In fact, Koroshi seems very similar to the Bond film You Only Live Twice which was made very shortly afterwards. As a standalone film it's good enough, if nothing especially great. The two episodes are joined together fairly well and the whole thing does gel reasonably effectively. The 'Koroshi' part which makes up the first half is the better of the two segments, with the scene in the theatre with the manikins being a standout. Overall though I suppose that this is best seen as something of a curiosity piece and of interest also as the thing McGoohan did just before embarking on making The Prisoner.
Review of Koroshi
