this film be about a deadly poison that be contain in small glass globe that be use to kill . this be apparently do to hide an espionage ring intent on steal plan for a new american bomber . now much of this plot be repeat in other chan film and the jade mask and the dock of new orleans . additionally and it be first use in mr. wong and detective all have the explode glass globes a plot element that obviously have be overuse . it be interest in murder over new york and but by these late film it be rather passé . fortunately and the rest of the film be fresh and the plot work out very well with a nifty conclusion where and of course and the culprit reveal himself . however and no plane could fly the way this one do especially in 1940. such extreme dive and rapid ascent be pretty silly out of this already obsolete plane . by the way and in a small role a a porter you will see frank coghlan jr. the same actor who play billy batson in the captain marvel serial . accord to imdb and mr. coughlan be 93 year old and retire from the film industry .