Connie first appears in the very first episode, The Vanishing of Will Byers. When Benny, a chef and owner of Benny's Diner, makes a phone call to social services as a young girl with a shaven head wanders into his establishment, desperate for food. However, unbeknownst to Benny, Connie and her team have infiltrated the phone call and believe that the young girl is Eleven, the girl they kidnapped 12 years ago to experiment on. Connie arrives and murders Benny. Her team try to surround Eleven, but she uses her abilities to escape.
Connie is believed to have died or, at the very least, have been blinded in the season finale when Eleven uses her abilities to escape her once again.