![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCPp79wFuC2StcG0bMdiJaZkQxZvnI2kREzQUc6uSPyQBDQ4oD6GQHztNuhWnXGA4SyfIo7xuoQXXCKuUIFdlj_YNxHRSZ6UAU4dI0qp0Znrz9OTHInXtVvXeap_-5E43SefyO3khx64JV/s320/SueThomasCover.jpg)
What many viewers don’t know is that the series is based on a real person. The real Sue Thomas is a deaf fingerprint technician whose lipreading ability won her a job on the FBI's elite surveillance team.
Her story is told in the book Sue Thomas: Breaking the Sound Barrier.