On May 8 , 2015 , John R. Leonetti , was announced as the director of '' Wolves at the Door '' for New Line Cinema , with Gary Dauberman as screenwriter and Peter Safran as producer . The script was loosely based on the Manson Family murders in 1969 . Known as the Tate murders , the event saw members of the Charles Manson cult break into the home of Sharon Tate , eight-and-a-half months pregnant , and her new husband director Roman Polanski . The director was shooting in Europe at the time , but Tate was entertaining three friends . They were all stabbed and shot to death multiple times . The project was described as " a home invasion thriller set in the 1960s but is not a retelling of the actual events , nor will it reference any Manson connection . " Casting was announced in May 2015 , with Katie Cassidy playing the lead role of Sharon , alongside Miles Fisher as Jay , Elizabeth Henstridge as Abigail , and Adam Campbell as Wojciech
Tate murders
Tate murders
Wolves at the Door