Retrograde. Stanley Townsend, Ivanno Jeremiah & Oliver Johnstone. Photo: Marc Brenner. Ryan Calais Cameron's play Retrograde is set in 1950s Hollywood when a twenty-something struggling actor, Sidney Poitier (Ivanno Jeremiah), is on the verge of signing a deal with a film studio. Peppy young writer Bobby (Oliver Johnstone) is on...