A Hofstra Law School graduate student has been accused of strangling a woman into a "stupor" during a possible BDSM encounter.

Ryan Hemphill, 33, was arrested in April 2013 after the woman, whose name has not been released, experienced a "loss of consciousness" in his apartment, according to the Post. The trial is starting this week.

According to the criminal complaint, Hemphill grabbed the woman around the neck with his hands and blocked her nose and mouth late at night on Feb. 28th, 2013. He also allegedly held a knife to her throat and said, "If you don’t leave I will slit your throat." The criminal complaint also says that Hemphill had a previous encounter with the women in which he strangled her "blocking her nose and mouth" and causing her to "become dizzy, suffer bruising and redness to her neck area, as well as to suffer substantial pain to her neck area."

Hemphill has been charged with strangulation in the second degree, menacing, criminal obstruction of breathing and criminal possession of a weapon.

As for how the cops figured out that Hemphill might be into BDSM, the detectives over at the Post are on the case:

Cops found all sorts of sinister stuff when they searched his place, such as a baton sword, daggers and sheaths, a “Gag Factor 24″ porn DVD, black ski mask, white metal handcuffs, knives, Trojan condoms and metal knuckles.

"We believe he’s into BDSM," law enforcement sources said.

What gave it away? Was it the SINISTER Trojan condoms? Was it the PORNOGRAPHY DVD? We guess it is a little sinister that someone is still using DVDs instead of getting their porn from the internet like everyone else.