Jessica is a gerontophile who pretends to work at an antique store to pick up elderly men to have sex with.
She tried to have sex with Grandpa when he inquired about the origin of an old coin. She posed as a worker and took him on a wild goose chase around town, making him think that they're being listened to and that she had to tell him about the coin in private. She even stole and dumped a car which she claimed was wired, and had her friends chase after them when they entered a club to talk where no one would hear them. It culminated in her talking him to a dingy hotel (called A Safe Place) where she revealed her true intentions in the room that she uses to have sex.
Grandpa rejected her advances because he was still married to his late wife Agnes, but this only enticed Jessica to the idea of a threesome (which she has had many times before as shown when she shows Grandpa pictures of her having threesomes). Jessica demanded that Grandpa prove to her that his wife is dead, so the two drove to the cemetery. Jessica then decided that it would be a good idea to have a threesome with Grandpa and his dead wife because "it doesn't get any older than dead". Grandpa was really disgusted at the idea, but Jessica made him dig up his wife's grave at gunpoint. However, there was nothing but Styrofoam peanuts in the coffin. Digging through the peanuts, the two ended up falling into Mr. Pickles' lair.
Certain that Mr. Pickles has stolen Agnes' body, Grandpa took Jessica's gun and started searching for the dog with Jessica following behind him. The two found Mr. Pickles playing table tennis with his friends. Grandpa demanded Mr. Pickles and his associates to tell him where Agnes. Jessica then noticed the two elderly kings and tried to seduce them, only to be killed by Mr. Pickles with a ping-pong paddle.
- Some of the old men she had sex with (as seen in pictures in her room) are ones that have appeared in previous episodes.
- Jessica appears to be good at seducing the old people she wants to have sex with, as shown when she tries to do so with the elderly kings in Mr. Pickles' lair