Trish and Jessica surveil Gregory Sallinger and Trish shuts down the power to sneak into his apartment when he leaves in episode 3x05 "AKA I Wish". Detective Costa catches Jessica about to break into the building and she asks for the list of names of the identified victims in episode 3x06 "AKA Sorry Face". Detective Costa tries to stop Jessica from heading inside and later Sallinger returns home in episode 3x08 "AKA Camera Friendly". Appears in 1 more episode.
Jessica sets Trish up on the rooftop to keep an eye on Gregory Sallinger's apartment window in episode 3x05 "AKA I Wish".