“Harriet” (** out of four) was a lumbering biography of Harriet Tubman (Cynthia Erivo) who escaped the horrors of slavery and set off on a personal journey to free thousands of slaves and trying to stay free herself and stay alive. Earnest but superficial treatment of a great historical figure; Erivo is OK in the lead role but somewhat one-note and aloof. Janelle Monae is somewhat stronger portraying Marie Buchanon. A disappointment from director Kasi Lemmons who previously directed “Eve’s Bayou.”