Geraldine Grundy

"How would we explain why we were together at Sweetwater River at 6:00 A.M. on the Fourth of July? And you're right. We didn't say anything. We're both going to have to live with that choice. Do you understand? I think you should pursue your music, but not with me."

- Ms. Grundy to Archie

Geraldine Grundy, also known as Ms. Grundy (real name Jennifer Gibson), is a recurring character on Riverdale. She is portrayed by Sarah Habel.

Geraldine is a music teacher at Riverdale High School.

Early life
Geraldine Grundy is a music teacher at Riverdale High School, she doesn't only teach music, but she's quite skilled in her own right. At some point during her life, she learned to play the cello. During one Summer, she had a romantic relationship with one of her students, Archie Andrews, and both embark on secret relationship together. On July 4th, Geraldine and Archie both hear a gun fire go off at Sweetwater River at the time of Jason Blossom's disappearance.

Season 1
During the assembly being held by Cheryl Blossom, Geraldine looked back at Archie Andrews as he sat in the crowd, remembering their time spent together during the summer, in which they had a lengthy romantic relationship. Archie later approached Geraldine, asking for her help in making his music. She is hesitant but eventually agreed to assist him. Later that day, it is revealed that both heard a gun shot on the 4th of July during Jason Blossom's disappearance-turned-murder investigation. However, she refuses to tell the police as it would expose her scandalous affair with one of her students.

Geraldine is paid a surprise, late night visit by Archie, whose conscious is eating away at him. They both heard the gunshot on July 4th, at Sweetwater River. Geraldine assured Archie that they don't know anymore than the police, which is that a gun was fired, and Jason is dead, they don't know by whom though. Archie believed telling them would be of help, as that's something the police aren't aware of, however, Geraldine is not up for negotiating. She reminded him that both of their lives could be ruined if people find out about them. Matters only get worse, as Archie is questioned by Mr. Weatherbee, he didn't say anything but if what they have isn't real, then he doesn't know what he's protecting. Geraldine insisted that their relationship is real, so much so that she's putting herself in Archie's hands.

Geraldine and Archie arranged another one of their meetings, they discussed why Archie would tell the authorities about the gunshot, he did so hoping that it would help Cheryl, as they were gonna crucify her. However, by helping Cheryl, he put himself and Geraldine at risk. Archie attempted to down play the situation but it is far more serious than he's aware. Geraldine explained that Sheriff Keller could go digging even further, that would lead to the exposure of their relationship. Realizing that she's inching closer to being found out, Geraldine decided it was best to suspend their lessons for the time being. She would then attend the Taste of Riverdale, there she ran into Fred Andrews, Archie father. Fred told her how often Archie spoke highly of her. He then explained that he wanted to be supportive but he first needed to know if Archie has the talent to match his passion, Geraldine assured him that the talent is there, unquestionably.

Trivia

 * Grundy is a skilled cellist, demonstrating aforementioned abilities on several occasions.
 * Her real name is Jennifer Gibson. She stole the name Geraldine Grundy from an elderly woman who died seven years prior.