Shortly after the birth of Bonnie Tracy, Crewy Lou approached Dick Tracy and Tess, offering to photograph the baby. Tess (herself a skilled photographer) was impressed by Lou's samples and agreed to let her photograph Bonnie despite Dick's objections. Crewy Lou then used the photographs of Bonnie (along with pictures of the babies of other prominent citizens) to convince the wealthy new father Fortson B. Knox to allow her to photograph his child. This was part of a scheme by Crewy Lou and her safe-cracker associate Sphinx to gain access to Knox's home.