Around 1976, Paisley and Maryann
separated. In December 1977 and March 1978, he attended two five-day "personal awareness" seminars conducted by
Lifespring. According to Paisley's
psychiatrist, Paisley began attending individual and group
psychotherapy sessions in April. On September 24, 1978, Paisley disappeared after setting sail on the
Chesapeake Bay with his
sloop Brillig. On October 1, a body claimed to be his was found floating in the Bay near the mouth of the
Patuxent River with a gunshot wound to his head and a weighted
dive belt around his waist. His boat was found the previous week
run aground. However, the autopsy report later revealed discrepancies with his documented height and weight, leading to long-held suspicions that the badly-decomposed body, as was found, was not actually Paisley's. [See 'Senate inquiry' below]. Due to the advanced state of decomposition of the body when it was found, fingerprinting was not possible, and other means of positive identifications were similarly impossible to be ascertained. The CIA arranged for the body to be cremated, without family, friends and/or associates having had an opportunity to positively identify the remains as Paisley's. Shortly after his presumed death, the psychiatrist stated Paisley was to attend a group therapy session in
Chevy Chase, Maryland on September 26 with his estranged wife to discuss the failure of their marriage. He speculated that due to personal developments Paisley may have been experiencing "feelings of loss and abandonment". ==Senate inquiry==