The Floyd Sisters Mysteries is a series about Lynda, Cheri and Sinda, the Floyd sisters. They seem to find themselves in unpredictable situations that call for them to become amateur detectives. Lynda is 13, Cheri is 11 and Sinda is 8.

Their Siamese cat Ty-Ling occasionally makes an appearance to help or hinder, usually Sinda. In Danger in Dallas, the girls and their mother Jean have moved to the Dallas area after Jean and Larry, the girls' father, have divorced. Danger in Dallas finds the girls trying to help their mother find some virtual reality software that has been stolen from her company. Her job could be threatened if that software is not found.