PEAKY BLINDERS, TEMPORADA 5 (UK, 2019) - Throughout the series, it is established that Tommy has been suffering from PTSD (Post-Traumatic Stress Disorder) since the events of World War I, which worsened with time and his close encounters with death and alcohol. Things turn for worse, when he starts hallucinating about Grace Shelby, his wife, who died tragically in season 3 and sort of blamed Tommy for her fate. So, it appears that she has now returned to take Tommy with him and coaxes him to end his life on multiple occasions. That’s what is left in the last scene.