Synopsis: Larry Lance was picking up his daily buttonhole from Dinah Drake's flower shop when a woman entered,asked for his help and died. More women came in and demanded that he hand over the crimson crystal. Dinah went into the back room and became the Black Canary, but when she returned the women had gone, taking Larry with them. She found a huge crimson crystal in the dead woman's hand. Two policemen entered, thought she was the murderess, and tried to arrest her. She escaped and put an ad in the daily papers, offering to exchange the crystal for one private eye at Maleek's Bridge. At the bridge mysterious women captured her and took her to Eagle Rock Mountain, where a swami ordered his followers to kill Larry and the Black Canary. She pressed her locket, and out came a smoke screen, enabling her to escape. She handed the criminals over to the cops, showed the duped women that the crystal was a fake.