House of Secrets” takes viewers inside the Massapequa Park home of alleged serial killer Rex Heuermann. And for the first time, both Heuermann’s estranged wife and his daughter discuss the case, highlighting a difference of opinion on the question of the New York City architect’s guilt.

Rex Heuermann, the accused Gilgo Beach serial killer, faces multiple charges related to the deaths of seven women whose remains were found in that area of Long Island between 1993 and 2011.

Victoria Heuermann, daughter of accused Gilgo Beach serial killer Rex A. Heuermann, says her father "most likely" committed the killings in a new Peacock documentary, "Gilgo Beach Killer: House of Sec...