Excellent stuff: Blackie at an art auction spots someone about to shoot someone so shoots first. Naturally he's (wrongly) blamed for the murder of the second someone, and so becomes a fugitive from Inspector Farraday again.
Under the noses of the cops the murderer disposes of the body in an ingenious way, but the chase is on to recover the corpse when they all realise the bullet will pinpoint the real murderer and clear Blackie. During this double chase there's time for plenty of the usual comedy repartee between Blackie, Farraday and Runt (first outing by George E. Stone), also a little bit of romance too. And Blackie's rich friend, Arthur (Lloyd Corrigan) also makes his first appearance, trying to out-bumble Charles Winninger.
Standard 57 minute Blackie outing, well worth watching to the converted.