PF Mathews, an award winning screenplay writer, got the attention of mainstream cinema lovers when he scripted for Ee Maa Yau. He is also writing the screenplay for Fahadh Faasil starrer Athiran. Fahadh was first apprehensive if Mathews would script the story of a debut director Vivek. But PF Mathews, predominatly a novelist, has decided to step out of his comfort zone for Athiran which is a psychological thriller. His award winning script for Kutty Srank and Ee Maa Yau had simplicity and was centered around the lives of coastal people, the backwaters, subtle fantasy and history whereas Athiran is something totally new to him- thriller.