Q & A (1990)

Starring: Nick Nolte, Timothy Hutton, Armand Assante, Patrick O'Neal, Lee Richardson, Luis Guzmán, Charles Dutton
Director: Sidney Lumet
Producer: Burtt Harris, Arnon Milchan
Screenwriter: Sidney Lumet
Runtime: 134 minutes
MPAA Rating: R

Synopsis: Lengthy, starkly brutal suspense/drama about a D.A.'s entanglement in police corruption. With its realistic feel, this pleases fans of the genre seeking gritty performances, an unflinching view of "the system."

A couple of the main characters are drag queens, and they are actually part of the story. It's not about transvestism, per se, though.