"Grant Withers — Police Captain Sam Street"

"Dorothy Tree — Valerie Edwards"

"A gay party is interrupted by murder and the world's most costly jewel stolen!"

"In all Frisco... only one man had the cunning to pierce the web of intrigue to the lair of an invisible killer!"

"Boris Karloff — James Lee Wong"

"Ladies and gentlemen, there has been a most unfortunate accident - your host... is dead. Originally, I thought it was…"

"You're taking back to China something that belongs there."

"You hold your tongue in more languages than one, my friend."

"More tingling mystery thrills from the new Chinese detective sensation!"

"Janet Gaynor - Esther Blodgett/Vicki Lester"