RELATIVELY SPEAKING: “As soon as I read the book, I knew I had to direct them,” confesses Fabian Thomas, referring to Tarell Alvin McCraney’s The Brother/Sister Plays, from which Thomas is adapting a pair of riveting stories for the Jamaican stage. Widely known for bringing challenging, edgy and non-traditional works to the stage with a cast of predominantly emerging talent, the director and his crew are set to breathe full-bodied life into In The Red and Brown Water (March 15-24) and The Brothers Size (March 29-April 7) at the Pantry Playhouse. McCraney’s gritty-lyrical and boundary-pushing plays delve into the world of a Louisiana bayou housing project, a landscape of hardship and dreams influenced by Yoruba mythology. While Brown Water revolves around Oya, a gifted athlete grappling with a dying mother and the challenges of young womanhood, The Brothers Size is about two siblings coming to terms with issues of sexuality, family and identity. Due to explicit language and sexual situations, both productions are aimed at mature audiences.