Charlie's visit to Paris, ostensibly a vacation, is really a mission to investigate a bond-forgery racket. But his agent, apache dancer Nardi is killed before she can tell him much. The case, complicated by a false murder accusation for banker's daughter Yvette, climaxes with a strange journey through the Paris sewers.
| Directing | Lewis Seiler | Director |
| Directing | Hamilton MacFadden | Director |
| Writing | Philip MacDonald | Story |
| Writing | Edward T. Lowe Jr. | Screenplay |
| Writing | Earl Derr Biggers | Characters |
| Writing | Stuart Anthony | Screenplay |
| Camera | Otto Dyar | Still Photographer |
| Production | Sol M. Wurtzel | Producer |
