In the opening scene, which is actually from a fictional novel within the movie, we meet a bad guy who the heroine states raped her sister. He also tries to force the heroine to disrobe (unsuccessfully.)
Not much. A busted lip, some minor cuts. Right near the end of the film (about 1.5hrs in) Joan's hand is cut by a knife. The only true gorey bit of the movie happens shortly afterwards when the cop's hand is eaten by a crocodile.