AllMovie

A Midnight Adventure was a veritable compendium of murder-mystery cliches -- at least, that was the consensus of opinion of contemporary reviewers. A man is found murdered in his lavish country home. At least five of his many weekend guests had motive and opportunity, since the dead man was a particularly vicious blackmailer. Even the district attorney falls under suspicion as the investigation continues. Several more murders occur before the killer is revealed to be the detective on the case -- a last-minute "surprise" stolen from Crane Wilbur's theatrical chestnut The Bat.