“Law & Order: Special Victims Unit” Season 18 will see yet another terrible case unfold in this week's episode of the NBC series.

NBC recently released the synopsis for “Law & Order: SVU” Season 18, episode 3, which will see the team taking on an unusual rape case. Based on the teaser, “Imposter” will feature Wallace Langham, Vincent Curatola and “Necessary Roughness” alum Callie Thorne in guest-starring roles. Langham will play the suspect who tricks a woman into sleeping with him, while Thorne will take on the role of the lawyer defending him. Check out the full synopsis for this week’s episode of the NBC series below:

“A man (Langham) tears a family apart when he uses a prominent fake identity to lure a vulnerable wife and mother into his bed. Barba (Raul Esparza) argues that the evidence amounts to rape, but he’s faced with a powerful defense attorney (Thorne) and a skeptical judge (guest star Vincent Curatola) in court,” reads the official synopsis for “Law & Order: SVU” Season 18, episode 3 (via CarterMatt).

The trailer for the upcoming episode also teased that Olivia Benson (Mariska Hargitay) agrees with Barba’s stance that what Langham’s character’s did amounts to rape. It looks like they’ll have a hard time finding evidence and convincing the court that the suspect should be convicted with rape for having sex under false pretenses.

Meanwhile, United States Vice President Joe Biden made a cameo appearance in last week’s episode of “Law & Order: SVU” Season 18. In “Making a Rapist,” Biden—playing himself—gave a speech at the precinct regarding the issue of the time lag in testing rape kits.

The episode, which was heavily inspired by Netflix’s “Making a Murderer,” saw Olivia and the team investigating the case of Sean (Henry Thomas), who had just been exonerated 16 years after he was wrongfully convicted of rape. Shortly after he had been freed, he was accused of raping and killing the daughter of the woman who accused him of rape nearly two decades ago.

“Law & Order: SVU” Season 18, episode 3 airs on Wednesday, Oct. 5 at 9 p.m. ET on NBC.