Dressed to Kill (1980, Orion/Filmways, dir. Brian de Palma) is one of those delicious thrillers that moves from place to place (like Vertigo) .. the museum… In drag (or perhaps let’s say in women's clothes) a transsexual slashes to death one of his psychiatrist's patients, and we are left with a very interesting Manhattan mystery. This film got a lot of PR. Michael Caine and Angie Dickinson.
With Michael Caine, Keith Gordon, Dennis Franz, David Margulies, Ken Baker.
I remember well the scene where the "transvestite" is encountered in an elevator all bloodied. This is a far cry from gender as we process it today.