A trio of talented actors have signed on for HBO's new endeavor. According to The Hollywood Reporter, Julia Ormond, David Strathairn and Catherine O'Hara have all joined the cast of HBO's Temple Grandin project.

The three actors join star Claire Danes, who will star as Grandin, a top autism expert whose work with the disease led up to her being a leading scientist in livestock handling.

Ormond will portray Grandin's mother, Strathairn will play Grandin's university professor and O'Hara will play her aunt.

The project goes before cameras later this month in Austin, TX.