Julianne Moore has had a busy month, first hitting the Lido at the Venice Film Festival with co-star Matt Damon and filmmaker George Clooney for their movie Suburbicon, and now the 56-year-old Golden Globe-winning actress is being feted again, along with her co-star and director, at the Toronto Film Festival.

Suburbicon stars Matt Damon as Gardner Lodge, a seemingly model husband and father living in the picture-perfect suburb of Suburbicon in the 1950s. His wife Rose (Moore) is in a wheelchair and blames Gardner, who was driving when the accident happened. Her sister Margaret (Moore) spends a lot of time helping her around the house and with her son Nicky (eleven-year-old Noah Jupe) until a home break-in turns deadly and reveals blackmail. Revenge and betrayal in the family.

The actress points out it’s not the first time she’s played twins in a film. During her 1985 stint on the daytime soap As The World Turns, she played Frannie and her look-alike half-sister, Sabrina. “They were twins and also half-sisters and cousins which was kind of disgusting,” she laughs. “But it was actually helpful that I had the experience of playing both sides in a scene with two characters so I knew you would come in and play one side, then they lock off the camera and it’s a hot set until you come back in the wig change and play the other side.”

The script was co-written by Golden Globe-winning filmmakers Joel and Ethan Coen (No Country for Old Men, Fargo) and Clooney and Grant Heslov (Argo) and loosely inspired by a 1957 documentary called Crisis in Levittown, about the first African American family to move into that suburb. “I liked the idea that in fact, we have two movies operating,” adds Moore, who won the 2014 Golden Globe Best Actress in a Drama award for the film Still Alice. “One movie is based on a real-life story about the first African American family to move into Levittown, Pennsylvania, and the other is a classic Hollywood ‘noir’ story with a (1944 drama) Double Indemnity plot about a husband killing a wife for the insurance and to have her sister. It starts out very comedically but ends being very, very dark.”