another trip to the altar for bulldog drummond be avert when at a pre wed gathering in switzerland a swiss detective be murder and an artificial diamond and courtesy of it inventor halliwell hobbes to bride and groom john howard and louise campbell . that set off a round of a little over an hour of fast paced adventure a drummond once again show up scotland yard . bulldog drummond peril step into the realm of science fiction with halliwell hobbes invent a machine that can create diamond and a process we know take million of year of geologic pressure . the gizmo he have look like it be make from spare part in dr. frankenstein laboratory . the film be bless with two villain and industrialist matthew boulton and rival scientist porter hall both of whom want to get their hand on that formula and profit off it in some way . one way that wasn not even consider be that very few diamond be use a jewelry . the majority be industrial strength and use for thing like oil drill bit . a way to manufacture those baby on the cheap would yield someone a lot of money . john barrymore play the scotland yard inspector and by dint of his name be top bill over john howard a drummond . it a sad come down for barrymore who remind me of j. d. cannon a chief clifford in the mccloud series and the way drummond constantly show up the yard . he also have a little bit of perry white thrown in a he constantly be tell people wouldo not call me inspector . the science be a bit bizarre and the plot have way too many hole in it . if youre expect something as good a when ronald colman be bulldog drummond and you would not find it here .