London: Actress Scarlett Johansson says her first directorial project, 'Summer Crossing', will be a hard sell.

The 27-year-old's film is an adaptation of Truman Capote's first novel, which is set in New York in 1945 and follows 17-year-old Grady, a wealthy protestant who embarks on a controversial affair with a Jewish parking attendant.

Johansson said the film does not have an obvious appeal because of the tricky setting and subject matter and the fact she doesn't intend to cast any famous stars, Contactmusic reported.

"It's about that first love you have that's sort of vicious, in a sense. It's a hard sell because it's a period film, it takes place in New York, and there's no room for a big name. We'll see. Fingers crossed," Johannson said.

The actress also spoke about her performance in 'We Bought A Zoo' in which she stars opposite Matt Damon and said director Cameron Crowe helped her through the project.

"I went into 'We Bought A Zoo' and I didn't know how to do it, exactly. I had ideas and things I wanted to do, but I was a little bit raw. I felt out of practice and a bit exposed. I was feeling very protective of myself. But Cameron's world was very welcoming."