Richard Arlen and Andy Devine have made a series of films together for Universal Studios during the early forties, a mix up of drama, comedy, adventure, war, crime movies I have not watched them for a while, more than thirty years, and I had in mind that they were all more or less the same: high high fast paced, never long, action packed, never boring, but all the same kind of plots and directing. It is pleasant to see BLACK DIAMONDS again, and I understand now why Universal studios also decided to produce serials during this period, though not as efficient as Republic Pictures ones. The serials from Ray Taylor and Lewis D Collins were exactly in the line of this film, and far better than the Columbia serials except maybe the Lambert Hillyer's BATMAN from 1943. Concerning BLACK DIAMONDS, there is really nothing special to say. It is an excellent time waster for those who don't know this period.