Nina Coe, 57, of Middletown, Connecticut, vanished on July 16, 2015. She returned home after a dentist appointment around 2:00 p.m., and phone records show her phone was in use until about 8:00 p.m., after which all communication stopped. Daily contact with family was normal for her, and her unexplained silence prompted a missing person report four days later and the case was classified as endangered missing because of health issues including bipolar disorder, alcohol and prescription pain medication addiction, and metastatic cancer that had been in remission roughly six months before she disappeared.

Police searched Coe’s apartment and found blood on a mattress; investigators believe the blood came from a June assault in which her ex-boyfriend, Gregory Erhardt, allegedly stabbed her in the neck with scissors. Coe had obtained a restraining order against Erhardt a month before she went missing, saying he had threatened to kill her in her sleep. Erhardt admitted contacting her in the days before July 16, sent over 40 text messages, met her at a supermarket, and was later arrested and convicted for violating the restraining order. He has not been charged in connection with Coe’s disappearance.

Extensive searches involving detectives, dive teams, K-9 units and helicopters have turned up no trace of Coe. A reward of up to $20,000 has been offered for information leading to an arrest and conviction.