The Investigator (1997)

Sniffing out lesbians from the British army. It's a dirty job, and some lucky bird's got to do it. In the case of The Investigator (1997), the lez-detector is played by Helen Baxendale as a staff(-free) sergeant whose nosing around in the private parts of enlisted women makes her question her own heterosexuality. One gander at Katrina Levon's right bazooka will have you commit to a lifetime of strict lady loving as well.