Deadly Whispers, which aired on CBS on May 10, 1995. After 19-year old Kathy Acton goes missing, her parents launch a desperate search for her. But, after she is found murdered, the investigation turns to her father, Tom Acton, as the primary suspect. Did he murder her, or was it one of his supposed six personalities?
IMDB:
https://www.imdb.com/title/tt0112831/
https://www.imdb.com/name/nm0001103/?ref_=tt_cl_t1
https://www.imdb.com/name/nm0715622/?ref_=tt_cl_t2
https://www.imdb.com/name/nm0000609/?ref_=tt_cl_t3
https://www.imdb.com/name/nm0484764/?ref_=tt_cl_t8
https://www.imdb.com/name/nm0005179/?ref_=tt_cl_t5
TV Tango:
http://www.tvtango.com/listings/1995/05/10
http://www.tvtango.com/movie/deadly_whispers
The Murder of Kathy Bonney
https://www.pilotonline.com/news/crime/article_b5173e39-539f-5c2e-9d28-6c6e65303895.html