From a 2014 news article which discusses Connecticut LE investigations into the disappearance of 3 girls at different times; Janice Pockett (1973), Debra Spickler (1968), and Lisa White (1974).
Mentioned in the article is one Charles Pierce who was a possible suspect in the Janice Pockett case. Could he have been responsible for the other two girls disappearances as well?
... prosecutors and police are creating a special task force to look once again at White's disappearance and at least two other missing girl cases from the same era.
... The other missing girls are Debra Spickler, who was 13 when she disappeared in 1968 while walking to a swimming pool in Henry Park in the Rockville section of Vernon...
... The story of Pockett's disappearance, which was investigated by the state police, garnered national attention...
... The Spickler and White cases were investigated by the Vernon police department. Spickler's case barely drew any attention. She lived in Mystic and was visiting relatives in Vernon....
... The only known suspect in (the Pockett) disappearance was Charles Pierce, a carnival worker who once confessed that he had abducted her.
State police brought Pierce from his prison cell in Walpole, Mass., to Tolland in 1980 and searched an area on Old Cathole Road that he led them to, but they never found anything. Pierce died less than a year later in prison.
Pierce had been convicted of murdering a 13-year-old girl in Boxford, Mass., in 1969. He claimed to have abducted and killed many other children as he traveled throughout the country working carnivals, but he was never charged in any other cases...
Link:
State To Focus On Decades-Old Missing Girl Cases
