While being married Costa fathered 3 children. The relationship began getting complicated due to drug use, causing irresponsible and bizarre behaviors. During June of 1966, at the age of 21, Costa brought home Bonnie Williams and Diane Federoff, two hippie girls, promising to take them to Pennsylvania. Costa told the police that he took the girls to Hayward, California after they went missing. Many believed these two ladies were Costa’s first victims, although he was never convicted of killing them. He was suspected of killing 8 girls, Bonnie Williams, Diane Federoff, Barbara Spaulding, Sydney Monzon, Susan Perry, Christine Gallant, Patricia Walsh, and Mary Anne Wysocki. While he was in California he started dating Sydney Monzon, they then moved from California to Provincetown Massachusetts. On May 17th, 1968 Costa stole surgical instruments and various drugs from a doctor’s office. In June of 1969 Monzon was reported missing and never seen again. On September 25th, 1968 his new girlfriend of one week, Susan Perry, disappeared out of the blue. Costa told Perry’s friends that she left for Mexico. Costa was arrested for driving with a suspended license, and for not supporting his children and wife, he was released after 2 months and began hanging around and doing drugs Christine Gallant, she drowned from overdosing, it is suspected that he drowned her but no one knows for sure. On January 29th, 1969 Patricia Walsh and Mary Anne Wysocki were on a trip to Provincetown and disappeared. During a search party on March 2nd ,1969 a woman’s body was found mutilated in the Old Truro Cemetery, this body was Susan Perry’s his girlfriend of one week before she “left for Mexico”. It was said that Perry’s body was found cut up into eight different pieces Two days after the first body was found, Walsh, Wysocki, and Monzon’s bodies were found buried together one and a…