Naive genius Richard Gannet (Leonard Mudie) has created a machine that can detonate explosives at a distance. The poor man intends the machine to end war though unscrupulous Rolf (George Zucco) has other ideas and kills Gannet and steals the machine. Despite Drummonds efforts Rolf and his confederate Lady Beryl (Jean Fenwick) make it away with the machine and board a cruise ship... though Phyllis is also on board.
In a far off land Rolf intends to sell the machine to foreign powers and kill Drummond and his friends Algy (Reginald Denny) and Tenny (E.E. Clive)...
A high energy entry in the Drummond series, the science fiction elements (with the usual mad scientist lab of electric arcs) is an excellent addition to the usual chasing around. Rolf is a terrifically sinister villain, though even one of the other characters calls his plots a bit theatrical!
