Synopsis by Janiss Garza
This independently made mystery features a solid, if not exactly stellar, cast. The Blue Pearl of the title is a priceless piece of jewelry which belongs to a royal Romanian family. However, Frederick Thurston (D.J. Hannegan) and Penrose Kent (Earl Schenk) have managed to get their hands on it. They sell it to Holland Webb (Lumsden Hare), who borrowed the money from his wife, Laura (Edith Hallor). The gem, however, isn't for Laura -- Webb gives it to his mistress, who is Sybil Kent (Florence Billings), the wife of Penrose. Police commissioner Richard Drake (Richard Halliday), who also happens to be an admirer of Laura's, is determined to track down the pearl, and he puts Laura's brother, Wilfred Scott (Corliss Giles), on the case. Scott discovers Webb giving Mrs. Kent the pearl. That night, the Webbs have a party and everyone is there. The featured guest is a Russian hypnotist and Sybil offers to be his subject. The lights go out and when they come back on again, the pearl is missing. Everyone except Laura is searched, and she confesses to Drake that she is the thief -- mainly because her husband engraved the pearl to Sybil, and she wants to use it as grounds for divorce. Webb's affair with Mrs. Kent is revealed, and the pearl is returned to the police. Once Laura is free from her philandering husband, it is obvious she will unite with Drake.